Anumber is (1\7) of another number. the difference of the numbers is 18. (assume that you are subtracting the smaller number from the larger number.) find the numbers.

Start by writing an equation

x - 1/7x = 18

since there is no number in front of the first x it is an implied 1. In order to subtract we need an equivalent fraction with a common denominator so we change 1 to 7/7.

Now we can subtract
7/7x - 1/7x = 18
6/7x = 18

divide each side by 6/7 (multiply 18 × the reciprocal)

x = 18/1 × 7/6

x = 126/6

x = 21

Exponential function

29. because you will divide each number of months by 12 to find the number of years. which would mean, 5, 12.5, 16, 45, 50, 72.5. which is crazy. anyhow, i think you find the median in the middle. and yea hope your test goes good