Which function is a quadratic function? t(x) = (x – 4)2 + 3 q(x) = (2x + 4)3 + 3 r(x) = (–6x – 4)4 + 3(x + 2)2 s(x) = –(x – 6) + 3(x + 1)

t(x) = (x – 4)^2 + 3

Step-by-step explanation:

Quadratic function is in the form of f(x)=ax^2 +bx+c  or f(x) = a(x-h)^2 + k which has highest exponent 2

t(x) = (x – 4)^2 + 3. It has highest exponent 2 so it is quadratic

q(x) = (2x + 4)^3 + 3 . It has highest exponent 3 so it is not quadratic

r(x) = (–6x – 4)^4 + 3(x + 2)^2 . It has largest exponent 4 so it is not quadratic

s(x) = –(x – 6) + 3(x + 1). It has largest exponent 1 so it is not quadratic

step-by-step explanation:

you can add the two numbers and divide the result by 2. or you can find the gap between the two numbers and add half of this to the smaller number.

x = -4

step-by-step explanation:

- 20 - 4(x + 3) = 4x

=> -20 - 4x - 12 = 4x

=> - 32 -4x = 4x

=> -32 = 4x + 4x

=> - 32 = 8x

=> -32/8 = x

=> -4 = x