Susan invests
2
times as much money at
8%
as she does at
4%
. if her total interest after
1
year is
$800
, how much does she have invested at each rate?

Which speed is the fastest (use 1 mile ≈ 1.6 kilometers)? a. 12 miles/hour b. 18 feet/second c. 19 kilometers/hour d. cannot be determined

Adecorative window is made up of a rectangle with semicircles at either end. the ratio of ad to ab is 3: 2 and ab is 30 inches. what is the ratio of the area of the rectangle to the combined area of the semicircles? possible answers: a. 2: 3 b. 3: 2 c. 6: π d. 9: π e. 30: π

If t17 = 3 (t5) in an arithmetic progression, find t1 in terms of d.