123 x 15 = 1845 is what he pays back total
18445 - 1500 = 345 is interest
Answer:
x < 12
Step-by-step explanation:
Step 1: Write out expression
5(x + 5) < 85
Step 2: Solve
5x + 25 < 85
5x < 60
8x^2 - 16x - 15 = 0
x = [ -(-16) +/- sqrt((-16)^2 - 4*8*-15) / ] 2*8
= 2.696, -0.696