Jose substitutes a value for y in the equation 5y = 3y + 4 How will Jose know if the value is a solution of the equation?

If the sales price of a dvd is $20 and the markup is 34%, what is the cost of the dvd?

Another type of subtraction equation is 16-b=7. explain how you would sole this equation then solve it.

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.