Ifa runner runs the first leg of a race in 52 seconds plus or minus 2 seconds, write an
equation to find the fastest and slowest times.

Which expression is equivalent to 3^3 + 2^2?

What is the slope of (0,32) and (100,212)

1. according to the internal revenue service, the mean tax refund for the year 2007 was $2,708. assume the standard deviation is $650 and that the amounts refunded follow a normal probability distribution. a. what percent of the refunds are more than $3,000? b. what percent of the refunds are more than $3,000 but less than $4,000? c. what percent of the refunds are less than $2,000?