What is the area of the figure A) 18yd2 B)54yd2 C)72yd2 D)90YD2

I'll give brainliest if you answer right : )

At 6 1/2 cents per pound of string beans how much does 7 pounds cost

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.