Gabriella needs a mason and must decide between 2 companies. for a service visit, company a charges $65 to send a mason plus $30/h. company b charges $30
to send a mason plus $47.50/h. the graph that models this situation is shown here.

according to the graph, how many hours must the two masons work in order to charge the same amount of money?

hour(s)

Use a calculator to verify that σ(x) = 62, σ(x2) = 1034, σ(y) = 644, σ(y2) = 93,438, and σ(x y) = 9,622. compute r. (enter a number. round your answer to three decimal places.) as x increases from 3 to 22 months, does the value of r imply that y should tend to increase or decrease? explain your answer. given our value of r, y should tend to increase as x increases. given our value of r, we can not draw any conclusions for the behavior of y as x increases. given our value of r, y should tend to remain constant as x increases. given our value of r, y should tend to decrease as x increases.