Please help: If the area of a rectangular picture of a stamp is 81 times greater than the actual stamp's area, and the stamp has a length of 4/3". what is the length of the stamp's picture? I know the answer is 12 inches but not sure how to get there so pls explain

Solve the system of equations. y= 2x y= x^2 - 15

Write an equation for the function that includes the points (2,100)and (3,100)

One of the complementary angles is 4 degrees mor than the other. find the angles (recall that complementary angles are angles whose sum is 90 degrees.) which of the following can not be used to solve the problem if x represents one of the angles? a. 2x-4=90 b. 2x+4=90 c. x+4=90