Problema Solution
The cost of cable television is given C=75+25x, where x is the number of months of service. Use this information to answer questions below.
a. Graph the equation C=75+25x
b. slope=
c. y-intercept
d. estimate the cost of having cable televsion for 45 months.
e. If the total cost for cable television is 1250 dollars, find the number of months of service.
Answer provided by our tutors
slope: coefficient of x = 25
y-intercept: (0,constant term added) = (0,75)
substitute 45 for x since x is the number of months
C = 75+25x
C = 75+25(45)
C = 75+1125
C = 1200
substitute 1250 for the cost, C and solve for x
C = 75+25x
1250 = 75 + 25x
1175 = 25x
47 = x
47 months