What is the y intercept of y =4x

Aley is at the store buying some supplies for an art project. she decides to buy some colored pencils for $3.95 and a drawing tablet. the total cost of the supplies before sales tax is $6.94. what is the cost of the drawing tablet? $10.89 $2.99 $1.76 $3.01

Atoss of a 20-sided die is equally likely to be any integer between 1 and 20 inclusive. what is the variance? provide your answer to two decimal points.

Consider the function f(x)=2x^3+24x^2−54x+9,−9≤x≤2 this function has an absolute minimum value equal to? and an absolute maximum value equal to ?