Which expression is equivalent to 2^5
a 4 x 2^3
b 25
c 4^3
d 2^2+ 2^3

Gretchen is setting up for a banquet. she has 300 chairs and needs to distribute them evenly among t tables. how many chairs should she put at each table? write your answer as an expression.

He weights of 2-pound bags of best dog food are approximately normally distributed with a given mean  and standard deviation  according to the empirical rule, what percentage of the bags will have weights within 3 standard deviations of the mean? 47.5%68%95%99.7%

Tom drove 206 miles in 3.9 hours. estimate his average speed.