If 7 key chains cost $55.65, then 12 key chains cost $
1 answer:
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Answer:
x=8 and y=53
Step-by-step explanation:
Given function:
- y=5x+13
- y=x+45
Find x:
- the two equation, the x and are breaked apart..
- so find a number that they can both equal to together and has the same y.
- multiply by 8..
·
- combine the terms for x and 13
- since x is 8 then if we add 8 with 45 it should be 53...
y is:
- this means that y=53.
Therefore, x=8 and y=53..