Suppose that the equation V = 20.8x2 – 458.3x + 3,500 represents the value of a car from 1964 to 2002. What year did the car have the least value? (x = 0 in 1964)
Quadratic Function Form Word Problems

Quiz
•
Mathematics
•
9th Grade
•
Hard
Anthony Clark
FREE Resource
15 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
1965
1970
1975
1980
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
A diver is standing on a platform above the pool. He jumps form the platform with an initi8al upward velocity of 8 ft/s. Use the formula h t = −16 t2 + 8t + 24, where h is his height above the water, t is the time, v is his starting upward velocity, and s is his starting height. How high is the platform?
.25 ft
24 ft
25 ft
8 ft
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
The function f(t) = -5t2+20t + 60 models the approximate height of an object t seconds after it is launched. How many seconds does it take the object to hit the ground?
4 seconds
-2 seconds
-6 seconds
9 seconds
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
The profit from selling local ballet tickets depends on the ticket price. Using past receipts, we find that the profit can be modeled by the function p= -15x2 +600x +60 , where x is the price of each ticket. What is the maximum profit you can make from selling tickets?
$6060
$20
$600
$10,250
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
A toy rocket is launched from the top of a 48-foot hill. The rocket's height, h(x), is modeled by the
equation h(x) = -16x2 + 32x +48 after x seconds. How high was the rocket at 2 seconds?
3
32
48
64
100
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
A frog is sitting on the ground when he is scared by a big dog. His movement is modeled by the equation h = -6t2 + 6t where h is the frog's height at any given time, t . How many seconds until the frog is back on the ground?
0.5 seconds
1 second
1.5 seconds
2 seconds
3 seconds
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
A dolphin jumps from the water at at initial velocity of 16 feet per second. The equation h = -8t2 + 16t models the dolphin's height at any given time, t. What is the maximum height the dolphin jumps?
1 foot
5 feet
7 feet
8 feet
12 feet
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