Karin has $ 70 in a savings account that earns 10% interest, compounded annually. To the nearest cent, how much interest will she earn in 3 years ?

Two blends of tea are mixed to make a blend that will be sold at the fair. black tea sells for $2.20 per pound and orange pekoe tea sells for $3.00 per pound. how much of each should be used to obtain a 4lb blend selling for $2.50 per pound?

Determine the difference: 3.2 × 1010 – 1.1 × 1010. write your answer in scientific notation.

What is the average diastolic blood pressure for adults