At Home Part 4

Question 1

The population, y, of a small town can be represented using a quadratic model. The maximum population, 6,000 people, occurred 20 years after record keeping began. Five years later, the population was 5,950. If x represents the number of years after record keeping began, which equation represents the given scenario?

Revolt · Accepted Answer

y = –2(x – 20)2 + 6,000

Question 2

[___] meters

Revolt · Accepted Answer

12.5

Question 3

Which equation, when graphed, has x-intercepts at (−1, 0) and (−5, 0) and a y-intercept at (0, −30)?

Revolt · Accepted Answer

f(x) = −6(x + 1)(x + 5)

Question 4

The quadratic function that models the scenario is f(t) = t2 + t.

Revolt · Accepted Answer

16

Question 5

Question 26

Revolt · Accepted Answer

5

Question 6

3412

Revolt · Accepted Answer

3

Question 7

On a game show, contestants shoot a foam ball toward a target. The table includes points along one path the ball can take to hit the target where x is the time that has passed since the ball was launched and y is the height at this time.Time (x) Height (y) 0102241610How high was the ball after 8 seconds?

Revolt · Accepted Answer

42 feet

Question 8

After seconds, the ball attains its maximum height of feet.

Revolt · Accepted Answer

2

Question 9

3412

Revolt · Accepted Answer

4

Question 10

After seconds, the ball attains its maximum height of feet.

Revolt · Accepted Answer

16

At Home Part 4 Answers

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