Which of the following functions has a rate of change that stays the same?
A. y=-4x+10
B. Y=1/2x^2
C. y = 3^x
D. y=x^2+2

A

Step-by-step explanation:

it is the only one that is linear:

Linear means the slope stays the same, it can look like: y=#, y=#x, y=#.##x, y= #over#x. It always has the variable x, unless it is just one number. alos linear is a straight line

Exponential is a slope that always changes, it does not increase by the same amount every time, but it does have a pattern. They always have a #x^# that is what makes it exponential, an exponent.

I hope this all helps u

pls give a brainliest and a thx ;)

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