If u meant to put, 5x multipled by 2^3x=21 the answer is x= 0.798
The equation in standard form would be,

All you have to do is move -2/7x to the other side.
Hope this helped
:D
Answer:
8763
Step-by-step explanation:
Let x represent the number of students the college had last year. Then this year's enrollment is ...
... x - 3%·x = 8500
... x(1 - 0.03) = 8500 . . . . . collect terms
... x = 8500/0.97 ≈ 8762.89 . . . . divide by the coefficient of x
Enrollment last year was about 8763.
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Of course, you know 3% = 3/100 = 0.03.
P<12 would be the answer to this question.