Answer:
Stefan spent 108.9$ and made 12.1$
Step-by-step explanation:
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take 10% of 121 and subtract it from 121 and you get the price he paid and made
Answer:
2700ft^3
Step-by-step explanation:
Cost of installation fee is $120.
Step-by-step explanation:
Let,
Monthly fee = x
Installation fee = y
According to given statement;
6x+y=594 Eqn 1
11x+y=989 Eqn 2
Subtracting Eqn 1 from Eqn 2

Putting x=79 in Eqn 1

Cost of installation fee is $120.
Keywords: Linear equations, subtraction
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Answer:
y=1x-10
Step-by-step explanation:
y=1x-10
slope=1
9/9=1