Which phrase describes an unknown or changeable quantity

Company A charges $107 and allows unlimited mileage. Company B has an initial fee of $65 and charges an additional $0.70 for every mile driven.

A board game that normally costs $30 is on sale for 25 percent off. What is the sale price of the game?

What is the answer to this question? (6h + 1) - (9h + 4)

There are 12 boys and 13 girls in a class. If the teacher randomly chooses a student's name out of a hat, what is the probability it will be a girl?

A square tabletop has an area of 1640 in2. To the nearest tenth, what is the length of 1 side of the tabletop?

Jason bought a case of 60 oranges from his school fundraiser. He gave his aunt 1/5 of the oranges to his aunt. How many of the oranges did his aunt get?

In one week a gas station sells 2,570 gallons of gas. On average, how many quarts did they sell each day during that week? Round your answer to the nearest hundredth. Hint: there are 4 quarts in a gallon.

On a piece of paper, graph y-3>2x+2

Factor the expression 27-9x+15y

In △ABC, AC=12 in., BC=1.5 in., and m∠C=63°. What is the area of △ABC? Enter your answer as a decimal in the box. Round only your final answer to the nearest hundredth.