If f(x) = (2x² + 5), then f'(x)

Work Shown:

f(x) = 2x^2 + 5

f ' (x) = d/dx[ 2x^2 + 5 ]

f ' (x) = d/dx[ 2x^2 ] + d/dx[ 5 ]

f ' (x) = 2*d/dx[ x^2 ] + d/dx[ 5 ]

f ' (x) = 2*2x^1 + 0

f ' (x) = 4x

215.92 dollars is the answer

x = -3

y = -18

step-by-step explanation:

to solve by substitution, substitute one variable and solve for the other. then substitute again to find the remaining variable.

x-1/3(3x-9) = -3 since y=3x-9 substittute y.

x-1/3(3x-9)=-3

x + x +3 = -3

2x+3=-3

2x+3-3= -3-3

2x=-6

x=-3

substitute again into y=3x-9

y=3(-3)-9

y=-9-9

y=-18