An experienced roofer can roof a house in 26 hours. A begin- ning roofer needs 39 hours to complete the same job. Find
how long it takes for the two to do the job together.

The amount spent on food and drink by 20 customers is shown below what is the modal amount spent and the median? 40 25 8 36 18 15 24 27 43 9 12 19 22 34 31 20 26 19 17 28

William invested $5000 in an account that earns 3.8% interest, compounded annually. the formula for compound interest is a(t) = p(1 + i)t. how much did william have in the account after 6 years? (apex)

What is the 17th term in the arithmetic sequence in which a6 is 101 and a9 is 83