Using this input and output machine, f(x) = ? x3 - 13

x3 - 11

x * 20 - 11

x2 + x + 21

Carlos spent 1 1/4 hours doing his math homework he spent 1/4 of his time practicing his multiplication facts how many hours to carlos been practicing his multiplication facts

Cody was 165cm tall on the first day of school this year, which was 10% taller than he was on the first day of school last year.

The length of time it takes to find a parking space at 9 a.m. follows a normal distribution with a mean of 5 minutes and a standard deviation of 2 minutes. find the probability that it takes at least 8 minutes to find a parking space. (round your answer to four decimal places.)