Hannah earned $1536 in 8 years on a investment at a 4% annual simple interest rate how much was hannah's investment

Acyclist bike x distance at 10 miles per hour .and returns over the same path at 8 miles per hour.what is the cyclist average rate for the round trip in miles per hour ?

Which of the following is closest to 32.9 x 7.5? a: 232 b: 259 c: 220 d: 265

Which set of side lengths form a right side? a) 3ft,6ft,5ft b)50 in,48in,14in c)53m,48m,24m d)8cm,17cm,14cm