Make sure you write your final answer as a percent! * 2 points
A DVD normally costs $14. It is on sale and now costs
$10.50. By what percentage did the price decrease?

Rewrite the hyperbolic equation 4y^2 -9x^2 +54x-8y-113=0

The area of a circle is equal to 1 dm². find the radius of the circle.

The input to the function is x and the output is y. write the function such that x can be a vector (use element-by-element operations). a) use the function to calculate y(-1.5) and y(5). b) use the function to make a plot of the function y(x) for -2 ≤ x ≤ 6.