Sally bought a new iPad for $289 and a sales tax of $20.30 was added to the cost. What was the sales tax rate (percent) ? Round to the nearest percent.

Solve for x 2x^2 + 7x - 15 = 0

Change 530% to a fraction

what is 6.5 divided by 13

How do i make congruency statements

Is 3 1/2 tons equal to greater than or less than 6,000 pounds

120 decreased by 45%

A coral reef grows 0.11m every week. How much does it grow in 14 weeks? Write your answer in centimeters.

A biologist is studying the composition of birds on a lake and counts 61 ducks, 17 geese, 11 cranes, 15 swans, and 6 herons.

During a heavy rain storm, a city in Florida received 12 1/4 inches of rain in 25 1/2 hours what is the approixmate rainfall rate in inches per hour

Working her way through school, Julie works two part-time jobs for a total of 35 hours a week. Job A pays $6.10 per hour, and Job B pays $7.40 per hour. How many hours did she work at each job the week that she made $235.