Question

Translate the sentence into an equation using n as the unknown number. Then solve the equation for n.

Two times a number increased by 5 is 15.

a.
2n(5) = 15
n = 1.5
c.
2n + 5 = 15
n = 20
b.
2n + 5=15
n = 5
d.
n + 5 = 15
n = 10

Answer 1

`n-the\ unknown\ number\\\\2n+5=15\ \ \ \ |subtract\ 5\ from\ both\ sides\\\\2n=10\ \ \ \ \ |divide\ both\ sides\ by\ 2\\\\\boxed{n=5}\\\\Answer:\boxed{2n+5=15;\ n=5}`