What is the simple interest on $32,000 at 7% interest for 6 months? (1) $13,440
(2) $2,240
(3) $1,120
(4) $6,720

The fence around a quadrilateral-shaped pasture is 3a^2+15a+9 long. three sides of the fence have the following lengths: 5a, 10a-2, a^2-7. what is the length of the fourth side of the fence?

Your food costs are $5,500. your total food sales are $11,000. what percent of your food sales do the food costs represent?

Scores on the cognitive scale of the bayley-scales of infant and toddler development range from 1 to 19, with a standard deviation of 3. calculate the margin of error in estimating the true mean cognitive scale score, with 99% confidence, if there are 12 infants and toddlers in a sample.