The formula p=8n-30 gives the profit p when a number of items n are each sold at $8 and expenses totaling $30 dollars are subtracted. If the profit p is $170, how many items were sold?

Aman is 6 feet 3 inches tall. the top of his shadow touches a fire hydrant that is 13 feet 6 inches away. what is the angle of elevation from the base of the fire hydrant to the top of the man's head?

Change negative exponents to positive, then solve

Ebert used to make $22 an hour, but got a 10% raise. how much more will he make in a 40 hour work week with raise?