Christina started her weekend mountain climb at 15 feet below sea level. She climbed 300 feet the first day and another 320 feet the next day. At what elevation did Christina end up after the second day of climbing?

Asmall foreign car gete 42 miles per gallon and user 35 gallons on a trip.gasoline costs $1.05 per gallon.what was the cost of gasoline per mile driver?

Abox contains 1 plain pencil and 4 pens. a second box contains 5 color pencils and 5 crayons. one item from each box is chosen at random. what is the probability that a plain pencil from the first box and a color pencil from the second box are selected? write your answer as a fraction in simplest form.

If y varies directly as x2 and y=6 when x=6, find the constant of variation.