6. let f(x)=x+5 and g(x)=x^2. find (g*f)(4)

a.9
b.81
c.21
d.1

This is my question~~ ( r ^ 4 - 2r ^ 3 - 23 r ^ 2 - 4r - 32)÷(r+4) ~~ i must use long division to solve it : / i was wondering if anyone world like to solve it. and if so, share step-by-step explanations! you! ❤

How do you create a data set with 8 points in it that has a mean of approximately 10 and a standard deviation of approximately 1?

Twelve less than a number is at most 20