Which is a quadratic function?

A, f(x) = 2x + x + 3
B, f(x) = 0x2 – 4x + 7
C, f(x) = 5x2 – 4x + 5
D, f(x) = 3x3 + 2x + 2

None

Step-by-step explanation:

A quadratic equation , is any equation that can be rearranged in standard form as : ax^2 + bx + c, where a and b and c are known numbers . I a =0 like all of the above examples, then the function or equation is linear.

for example : A,f(c) = 2x +x +3

= 3x +3 ===> equivalent to 0x^2 +3x +3

answer: the answer is 30 miles per hour.

ft/s -> mphmph = ft/s 1.466667mph = 44 divided by 1.466667mph = 30.00000

- r3ktforgood ☕