Solve for x: x^2 = 289
step by step

The difference of two numbers is 40. find the numbers if 0.3 parts of one number is equal to 37.5% of the other one.

If f(x)=3 over x+2 - square root x-3 then f(7)=

There is a linear relationship between a salesperson sales and her weekly income.if her sales are $200 her income is $500 and if her sales are 1,200 her income is $600.what is the relationship between sales and income