The graph -16 .25t. 15 models the height and time of a ball that was thrown off a building where h is the
height in feet and t is the time in seconds. at what height was the ball initially thrown off the building?
a. 1 foot
b. 2 feet
c. 10 feet
d. 15 feet

could

step-by-step explanation:

u send me a picture of ur work

x = ±sqrt(10)

step-by-step explanation:

5 - 2x² = -15

subtract 5 from each side

5-5 - 2x² = -15-5

-2x^2   = -20

divide by -2 on each side

-2x^2   /-2= -20/-2

x^2 =10

take the square root on each side

sqrt(x^2 )=±sqrt(10)

x = ±sqrt(10)

check:

5 - 2x² = -15

+sqrt(10)

5 - 2(sqrt(10))² = -15

5 -2(10) = -15

5 -20 = -15

-15 = -15

-sqrt(10)

5 - 2(-sqrt(10))² = -15

5 -2(10) = -15

5 -20 = -15

-15 = -15