Which is a quadratic function? f(x) = 2x + x + 3 f(x) = 0x2 – 4x + 7 f(x) = 5x2 – 4x + 5 f(x) = 3x3 + 2x + 2

C

Step-by-step explanation:

B isn't right. The 0 makes x^2 go away leaving a linear equation.

A is a linear function.

D is a cubic, so the answer is

C which has an x^2 function

area = length x width

length = 2 x width

32 = 2 x width x width

32 = 2 x width^2

36 = width ^2  

width = 6

length = 12

area is 32

perimeter = 2 x 12 + 2 x 6 = 24 + 12 = 36

step-by-step explanation: