Basic Calculus

What is the slope of the line tangent to the function

 $f\left(x\right)=10x^2\ at\ x=2?$  

• 10

• 20

• 30

• 40

What is the derivative of 

 $y=x^3-12x^2+x+5$  

•  $y'=x^2-12$  

•  $y'=x^2-12x$  

•  $y'=3x^2-24x+1$  

•  $y'=3x^2-24x+x$