It costs 5.50 per hour to rent a pair of ice skates for up to two hours. after 2 hours, the rental cost per hour decreases to 2.50. how much does it cost to rent a pair of skates for 3 hours

A company is expanding its building area from 14,000 square feet to 18,900 square feet. What is the percentage increase of the area of the building space?

2 1/7 divided by 1 1/14

if you want to convert feet to miles what operation would you use?

If the square of twice a number is 81, what is the number? I tried doing 2x^2=81 but that did not come out to the answer 4.5,-4.5

3+6*5+4:2-7 using the same expression, add parentheses so that the value of the expression is 38

Teesha is in french club. there are 19 students in the club. The french teacher will pick two students at random to guide visiting students from France. What is the probability that Teesha will not be picked up as a guide.

Solve ln (3x - 6) = 4.

Jack jack broke apart 5 x 216 as 5 x 200 5 x 16 to move to multiply mentally. what strategy did jackie use?

One number is 5 more than another. Five times the smaller equals 4 times the larger. Find the numbers

Rya uses 4 gallons of gas to drive 120 miles on the highway. if she gets that same gas mileage, how many miles can she drive on 1 gallon of gas?