Asmall business owner made $40,000 the first year he owned his store and made an additional 7% over
the previous year in each subsequent year. find how much he made during his fourth year of business.
find his total earnings during the first four years.

Given the equation f(x)=a(b)x where the initial value is 40 and the growth rate is 20% what is f(4)

Solve this riddle: i am an odd number. i an less than 100. the some of my digit is 12. i am a multiple of 15. what number am i?

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.