Inequalities — Unit test Answers

How many liters of water should be evaporated from 60 liters of a 28% salt solution so that the remaining solution contains 32% salt?

Celo used the simple interest formula to calculate the interest he earned on his savings last month. Which equation is equivalent to the simple interest formula?

The formula for the volume of a pyramid is Which of the following equations is equivalent to the given formula?

What is the value of for and ?

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?

Layna can paint a 350-square foot room in 4 hours. It takes Bebe 7 hours to paint the same room. Which equation can be used to find the time in hours, t, it takes Layna and Bebe to paint the room together? Rate(Rooms per Hour)Time(Hours)Fraction CompletedLayna Bebe

The formula to determine energy is . What is the formula solved for v?

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

What is the most simplified expression for ?

Harlon wrote the equation to find the area of a rectangle that has a length of and a width of 18. He solved for x and got Which of the following is an equivalent equation for x?

What is the coefficient of the x2-term of the algebraic expression ?

Miguel’s steps in evaluating an expression are given below. Step 1: Step 2: Step 3: Step 4: What, if any, was Miguel’s mistake?