Which equation represents a quadratic function?
answer choices:

a. f(x)={−3, ifx > 25, ifx ≤2

b. f(x)=(x+1)2−2

c. f(x)=||x−9||

d. f(x)=4(x+2)

20 points for the answer. this is for real , don't put random ! a rectangle has a length of 4 centimeters and a width of 7 centimeters. what is the effect on the perimeter when the dimensions are multiplied by 5? the perimeter is increased by a factor of 5. the perimeter is increased by a factor of 20. the perimeter is increased by a factor of 25. the perimeter is increased by a factor of 100.