Which of the following does not have 90 as a multiple?

7
6
5
3

7

Step-by-step explanation:

I don't completely understand what you were asking, but if you were counting by 7's, 91 would be after 84 instead of just 90.

7

Step-by-step explanation:

7x14=91, so 1 is not a multiple of 90. Don't really understand tho, plz comment if this is not what you meant.

5   1/4   miles per hour

step-by-step explanation:

15   3/4 / 3 = 5   1/4

-7/8

step-by-step explanation:

instead of subtracting you add the -6/8 and -1/8