SOLUTION: The charge C for renting an air hammer from Taylor and Son Equipment Rental is a linear function of the number n of days in the rental period. The charge is $103 for two days and

Algebra ->  Coordinate Systems and Linear Equations  -> Linear Equations and Systems Word Problems -> SOLUTION: The charge C for renting an air hammer from Taylor and Son Equipment Rental is a linear function of the number n of days in the rental period. The charge is $103 for two days and       Log On


   



Question 49297: The charge C for renting an air hammer from Taylor and Son Equipment Rental is a linear function of the number n of days in the rental period. The charge is $103 for two days and $232 for five days. Write C as a linear function of n. What would the charge be for four days rental?
Answer by venugopalramana(3286) About Me  (Show Source):
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The charge C for renting an air hammer from Taylor and Son Equipment Rental is a linear function of the number n of days in the rental period. The charge is $103 for two days and $232 for five days. Write C as a linear function of n. What would the charge be for four days rental?
LET CHARGE C=A*N+B.....FOR N=2..C=103
103=2A+B..................I
FOR N=5..............C=232
232=5A+B..................II
EQN.II=EQN.I....
232-103=129=5A+B-2A-B=3A
3A=129.....A=129/3=43
PUT IN EN.I
2*43+B=103
B=103-86=17
HENCE THE REQD.EQN.IS
C=43N+17