Three friends each run 2 miles on monday, 3 miles on tuesday, and 5 miles on friday.
which expression can be used to represent the total number of miles that the three friends run?
3 × 2 + 3 + 5
3 × (2 + 3) + 5
(3 × 2 + 3) + 5
3 × (2 + 3 + 5)

In the following situation, determine whether you are asked to determine the number of permutations or combinations. then do the calculation how many ways are there to pick a starting five from a basketball team of twelve members? a. permutation; ps - 2520 b. combination; 1c, - 792 c. combination: 2cs - 2520 d. permutation; ps - 95040

Weekly wages at a certain factory are normally distributed with a mean of $400 and a standard deviation of $50. find the probability that a worker selected at random makes between $450 and $500

The radius of the earth is two times the radius of the moon. what fraction of the volume of the earth is the volume of the moon?