City cabs charges a 2.25 pickup fee and 1.25 per mile traveled.Diego's fare for a cross-town cab ride is $22.25.How far he travel in the cab?
- KrishnamurthyLv 74 months ago
City cabs charge a 2.25 pickup fee and 1.25 per mile traveled.
Diego's fare for a cross-town cab ride is $22.25.
How far did he travel in the cab?
He traveled 16 miles in the cab.
- PhilomelLv 74 months ago
- llafferLv 74 months ago
If the pickup fee is $2.25 and $1.25 per mile, then the cost function for this is:
C(x) = 1.25x + 2.25
So what's the miles if the fare is $22.25? Solve for x when C(x) = 22.25:
22.25 = 1.25x + 2.25
20 = 1.25x
20/1.25 = x
x = 16 miles
- Mr. SmartypantsLv 74 months ago
First subtract the pickup fee. 22.25 - 2.25 = 20.00
Now divide 20.00 by 1.25. I get 16. That's 16 miles.