The expression –5x2 + 5x + 20 represents the height, in feet, of a paper airplane x seconds after its release from a rooftop.
What does 20 represent in this situation?
The length of a rectangle is 3k – 8, and the width of the rectangle is 3k – 1. Which choice represents the area of the rectangle?
The expression –5x2 + 25x + 70 can be used to estimate the height, in meters, of a toy rocket x seconds after it is launched from a platform. How many seconds does it take the rocket to hit the ground?
Which value of x is a zero for 9x2 + 6x + 1?
Which equation has a solution of 2/9?
The length of the rectangle below is represented by the expression (x + 7) and the width is represented by (x – 7).
The area of the rectangle is 32 ft2. What is the length of the rectangle?
Which graph represents the function f(x) = (x – 2)(x + 3)?
What are the solutions to the equation 7x2 – 22x = –3?
Which graphs shows a quadratic function with a y-intercept of 3 and an axis of symmetry at x = –1?
Which is an equation of the function graphed below?
The profit from selling tickets to a musical can be modeled by the function P(x) = –100x2 + 2,400x – 8,000, where x is the price per ticket, in dollars. What ticket price will maximize the profit?
A function is shown.
h(x) = –5x2 + 20x + 60
What is the maximum value of the function?
Which function has one positive and one negative root?
This is function p(x).
p(x) = –2x2 – 16x – 24
What is the vertex of the function?
The function f(x) = –2x2 + 10x models the height above the ground, in cm, of a jumping frog where x is the horizontal distance, in cm, the frog traveled during the jump. What was the horizontal distance, in cm, that the frog traveled during its jump?