What is a word problem for y=150-10x

What are the solutions of the equation? 5z^2 + 9z - 2 = 0 a. 1, -2 b. 1, 2 c. 1/5, -2 d. 1/5, 2

Suppose y varies directly with x. write a direct variation equation that relates x and y. then find the value of y when x=12 y=7 when x=3

In a timed typing test lara typed 63 words per minute.estimate the number of words she should be able to type in half in hour show your work