Sandra enters a pumpkin growing contest each year. Currently, her pumpkin measures 36 inches in circumference. Using data from previous years she models the weekly growth for her pumpkin with the equation y = 2x + 36. What is the meaning of the y-intercept in the equation?

—the graph shows how fast a strand of human hair grows. how many inches would the hair have grown in 5 months

The equation x2 – 1x – 90 = 0 has solutions {a, b}. what is a + b?

Suppose that the price p (in dollars) and the weekly sales x (in thousands of units) of a certain commodity satisfy the demand equation 4p cubedplusx squaredequals38 comma 400. determine the rate at which sales are changing at a time when xequals80, pequals20, and the price is falling at the rate of $.20 per week.