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Algebra Practice Questions on Phone Services

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4) Media Services charges $40.00 for a phone and $30/ month for its economy plan. The equation c=30t +40 describes the total cost, c, of operating a Media Services phone for t months.
The total cost for 7 months of service is?$___
If a customer has only $110 available, how many months of service can she receive?
5) Graph the system of inequalities
24) graph the line containing the given pair of points and find the slope.
(3,5),(-3.-5)
Also find the slope of the line
M=__? Simplify your answer, type an integer or a fraction
37) use the intercepts to graph to equation
X+4y=8
...

[Please see the question file for all the questions.]

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4) Media Services charges $40.00 for a phone and $30/ month for its economy plan. The equation c=30t +40 describes the total cost, c, of operating a Media Services phone for t months.
The total cost for 7 months of service is?$___
If a customer has only $110 available, how many months of service can she receive?
a. 2 1/3
b. 2 1/2
c. 3
d. 2
graph of the equation c=30t+40

Graph of C(t) = 30t + 40: [Points used for graphing are (0, 40) and (1, 70)]

(see attache file for graph)
C(7) = 30(7) ...

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