we are given the function 60 (2s+5)=64 and is asked in the problem to determine the solution. In this case, we can easily extract the value of s in the proceeding steps:
60 (2s+5)=64 2s + 5 = 64/60 2s = 64/60 - 5 s = (64/60 - 5)/2 s= -1.97 Answer would be D
