He earns $37 for 4 hours and 64.75 for 7 hours. what is the constant of proportionality

What is the solution of sqrt x+2-15=-3

Which term best describes the association between variables a and b? no association a negative linear association a positive linear association a nonlinear association a scatterplot with an x axis labeled, variable a from zero to ten in increments of two and the y axis labeled, variable b from zero to one hundred forty in increments of twenty with fifteen points in a positive trend.

How do i do this activity, is appreciated