Just do what you said (subsitute) and solve
x=number of classes
7.5x=5.5x+10
subtract 5.5x from both sides
2x=10
divide 2
x=5
5 classes
to find how much it costs, subsitute 5 for x in any equation
y=7.5(5)
y=37.5
total cost is $37.5 per month
Answer:
Step-by-step explanation:
(a) Your $160 is correct.
(b) No, this is not a proportional relationship, because the graph does not go through the origin. That, in turn, is because there is a fixed, up-front cost of $120.
(c) The total cost as a function of the number of months, m, is
TC(m) = $120 + ($40/month)m
Answer:
639/100
Step-by-step explanation:
Answer:
not enough information
Step-by-step explanation:
Would you use SSS or SAS to prove the triangles congruent? If there is not enough information to prove the triangles by SSS or SAS, write "not enough information". Explain your answer
