Grandpa Ernie is shrinking! Over the past 4 years, his height decreased by a total of 2.4 . It decreased by the same amount each year.

What was the change in Grandpa Ernie's height each year?

(just comment the answer please)

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

Sum is 17 and their difference is 3

15 and 14.7 are 1 apart, so 15 – 14.7 must be 1.