Arnie's car used 100 cups of gasoline during a drive. he paid $3.12 per gallon of gas. how much did the gas cost?

Two cyclists 84 miles apart start riding toward each other at the samen time. one cycles 2 times as fast as the other. if they meet 4 hours later what is the speed (in miles) of the faster cyclists

Acircle has a circumference of 28.36 units what is the diameter of the circle

Alcoa was $10.02 a share yesterday. today it is at $9.75 a share. if you own 50 shares, did ou have capital gain or loss ? how much of a gain or loss did you have ? express the capital gain/loss as a percent of the original price