Unit Test — Cumulative exam Answers

46 verified answers3 views

What is the equation that represents the sentence, “Twenty-four is the sum of a number and six.” Use x for the variable.

24 + 6 = x

24 = x + 6

24 + x = 6

x = 6 + 24

Free Preview

Which inequality represents the sentence below?The difference of –3.2 and the sum of a number and 19.1 is at most 14.2.

Negative 3.2 minus (x + 19.1) less-than-or-equal-to 14.2

Negative 3.2 minus x + 19.1 less-than-or-equal-to 14.2

Negative 3.2 minus (x + 19.1) greater-than-or-equal-to 14.2

Negative 3.2 minus x + 19.1 greater-than-or-equal-to 14.2

The new number, 550, is 200 more than the original number. What is the approximate percent change?

The percent change is approximately 33%.

The percent change is approximately 55%.

The percent change is approximately 150%.

The percent change is approximately 175%.

What is the value of the expression “three less than the quotient of ten and a number, increased by six” when n = 2?

mc022-4.jpg

mc022-5.jpg

Two cars raced at a race track. The faster car traveled 20 mph faster than the slower car. In the time that the slower car traveled 165 miles, the faster car traveled 225 miles. If the speeds of the cars remained constant, how fast did the slower car travel during the race? Distance(mi)Rate(mph)Time(h)Slower Car165rFaster Car225r + 20

55 mph

60 mph

75 mph

130 mph

Yannick and Jean are playing a guessing game with integers. Yannick wrote these clues to help Jean guess the unknown integer.What is the value of the unknown integer, n?

Millie needs a total of 7.8 feet of ribbon for a school project. She needs 0.7 more feet of ribbon. How much ribbon, in feet, did Millie already have? Write and solve an equation to find the answer.

6.9

7.1

7.5

8.5

A distance runner is running an 18-mile race. So far, she has run 43% of the race.Which would be the best way to estimate the number of miles the runner has run so far?

Find 40% of 10.

Find 40% of 20.

Find 50% of 10.

Find 50% of 20.

Ellen drew a graph showing the solution to an inequality. Which inequality does Ellen’s graph show the solution to?

3.25 less-than 2.5 + r

3.25 greater-than 2.5 + r

Negative 3.25 less-than negative 2.5 + r

Negative 3.25 greater-than negative 2.5 + r

The graph shows a line and two similar triangles.What is the equation of the line?

y = 3 x + 3

y = three-fourths x + 3

y = four-thirds x + 3

y = 4 x + 3

Breanna set up her media player and created a graph to show what she saved on it. What does point A represent on the graph?

Breanna has 40 songs for every 3 games on her media player.

Breanna has 2 songs for every 3 games on her media player.

Breanna has 37 more songs for each game on her media player.

Breanna has 1 more game for each song on her media player.

The map below shows the path that Jin walked this morning. According to his pedometer, the total distance of this path was 2.3 kilometers.What is the scale of the map?

1 centimeter = 2 kilometers

1 centimeter = 5 kilometers

2 centimeters = 1 kilometer

5 centimeters = 1 kilometer

The distance between the elementary school and the middle school is 4 miles. On the map, the two locations are inch apart. What is the scale of the map?

1 inch = 8 miles

1 inch = mile

inch = 1 mile

4 inches = 1 mile

Consider the two graphs below.Which statement best describes the graphs?

Graph 1 represents a proportional relationship, but graph 2 does not.

Graph 2 represents a proportional relationship, but graph 1 does not.

Both graph 1 and graph 2 represent proportional relationships.

Neither graph 1 nor graph 2 represents a proportional relationship.

Marina is solving the equation below by using the multiplicative inverse, or the reciprocal.By which number should Marina multiply both sides of the equation as the first step in solving it?

One-fifth

Four-fifths

It takes Franklin 14 hours to make a 200-square-foot cement patio. It takes Scott 10 hours to make the same size patio. Which equation can be used to find x, the number of hours it would take Franklin and Scott to make the patio together?

14 x + 10 x = 200

One-fourteenth x minus one-tenth x = 1

One-fourteenth x plus one-tenth x = 1

14 x minus 10 x = 200

Josiah’s parents pay him for each chore he completes. He created a table to show his earnings each week for the past month.Josiah’s Earnings Week 1Week 2Week 3Week 4Chores Completed4645Money Earned$12$18$12 Which graph correctly depicts his earnings including the last week?

On a coordinate plane, a graph titled Josiah's Earnings has chores completed on the x-axis and Money Earned on the y-axis. Points (4, 12), (5, 15), and (6, 18) are plotted.

On a coordinate plane, a graph titled Josiah's Earnings has chores completed on the x-axis and Money Earned on the y-axis. Points (12, 4), (15, 5), and (18, 6) are plotted.

On a coordinate plane, a graph titled Josiah's Earnings has chores completed on the x-axis and Money Earned on the y-axis. Points (4, 12), (6, 2), (6, 18), and (8, 8) are plotted.

On a coordinate plane, a graph titled Josiah's Earnings has chores completed on the x-axis and Money Earned on the y-axis. Points (4, 12), (5, 18), and (6, 18) are plotted.

One teaspoon equals 0.5 centiliters. How many liters equal 50 teaspoons? Round the answer to the nearest hundredth.

0.25 liters

0.50 liters

25 liters

50 liters

Zoe placed colored blocks on a scale in science class. Each block weighed 0.8 ounces. The total weight of all the colored blocks was 12.8 ounces. How many blocks did Zoe place on the scale? Write and solve an equation to find the answer.number of blocks =

Answer not available

Formula One race cars can reach speeds of approximately 100 meters per second. What is this speed in meters per minute?

0.6 meters per minute

meters per minute

600 meters per minute

6,000 meters per minute

Did you find these answers helpful?

Unit Test — Cumulative exam Answers

More from this Course

TRY EDGENUITY HACKS