Write an equation of the parabola in vertex form. passes through (10,-3) and has vertex (5,7)
A. y=-2.5(x - 5)2^+ 7
B. y=-2.5(x+5)^+7
C. y=-0.4(x+ 5)2 +7
D. y=-0.4(x - 5)2 +7

take the top number and divide it by a the bottom number

step-by-step explanation:

1/2 1 divied by 2 = .5

answer

the correct answer is

explanation

the given function is

the excluded values are obtained by solving:

we factor to obtain:

the excluded values are

f(x) has value 150 at x= 0

and 0 at x= 3

so d(f(x))/dt = slope = -150/3 = -50

1 1/5

step-by-step explanation: