Ravi is driving 440 miles to visit his grandma. He drives at a rate of 55 miles per hour.
How many hours will it take him to get of the way there?

Identify a1 and r for the geometric sequence an= -256(-1/4) n-1

Rob spent 25%, percent more time on his research project than he had planned. he spent an extra h hours on the project. which of the following expressions could represent the number of hours rob actually spent on the project? two answers

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.