R is the midpoint of PQ. PR = 6x + 7 and RQ = 3x + 8, find the length of PQ.

You are at a restaurant and owe $38 for your meal. you want to leave a 20% tip. how much will your tip be?

Suppose that a households monthly water bill (in dollars) is a linear function of the amount of water the household uses (in hundreds of cubic feet, hcf). when graphed, the function gives a line with slope of 1.65. if the monthly cost for 13 hcf is $46.10 what is the monthly cost for 19 hcf?

How long must $542 be invested at a rate of 7% to earn $303.52 in interest? in a easier way