Question 1022088
Call the numbers of nickels and dimes Jesse has, n and d.  Then we can write
n + d = 38  and
n = 2d - 1
Substitute that into the first equation and get
2d-1 + d = 38
3d - 1 = 38
3d = 39
d = 13 dimes so that
n = 2(13) - 1 = 25 nickels