Question 307539
5D+300M=429 MULTIPLY BY 3. 
3D+500M=315 MULTIPLY BY -5 & ADD.
15D+900M=1,287
-15D-2500=-1,575
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-1600M=-288
M=-288/-1,600
M=.18 PRICE PER MILE DRIVEN.
5D+300*.18=429
5D+54=429
5D=429-54
5D=375
D=375/5
D=75 IS THE DAILY RENTAL RATE.
PROOF:
3*75+500*18=315
225+90=315
315=315