Please help? you dont have to answer them all but im seriously in trouble 1. The graph shows the height y, in feet, of a balloon that is launched from a platform 13.5 feet high, as a quadratic function of x, the
time in seconds.
What is the domain of this function in this situation? (first picture)
A) 0 ≤ y ≤ 43.5
B) 0 ≤ x ≤ 54
C) 13.5 ≤ y ≤ 43.5
D) 14.5 ≤ x ≤ 54

2. Which graph best represents a function with a range of all real numbers less than or equal to 7? (last 4 graphs at the bottom)

3. What is the domain of the quadratic function given by f(x) = 2x2
+ 2x - 4?
A) [0, +∞)
B) all real numbers
C) all negative real numbers
D) all positive real numbers

4. Determine the range of the function. y = -2x^2+ 3
A) all real numbers
B) all integers less than or equal to 3
C) all integers greater than or equal to 3
D) all real numbers less than or equal to 3

5. You are tossing an apple. After t seconds, the height of the apple in feet is given by h = -16t^2 + 38.4t + .96. What is the domain of
this function?
A) t ≥ 0
B) all real numbers
C) 0 ≤ t ≤ 2.4
D) 1.2 ≤ t ≤ 24