Simplify the expression: (5x^2+3x+-6x+3)

Given the following sampling distribution of one mean with a sample size 49, from a normally distributed population,find the population standard deviation, o.79828588912497

Which function has an inverse function? a.f(x)= |x+3|/5 b. f(x)= x^5-3 c. f(x)= x^4/7+27 d. f(x)= 1/x²

What is the effect on the graph of the function f(x) = x2 when f(x) is changed to f(x) − 4?