Answer:
Step-by-step explanation:
If you let y=2x, you can plug it into the other equation.
x+2x=-9
Then solve that equation.
3x=-9
x=-3
Then use y=2x to find y.
y=2(-3)=-6
y=-6
Answer:
Total income= $84.53
Step-by-step explanation:
Giving the following information:
They charge $70 for the job
plus 5% for supplies. A homeowner gave them a 15% tip.
<u>First, we need to calculate the total cost for the job:</u>
Total cost= 70*1.05
Total cost= $73.5
<u>Now, the total cost plus the tip:</u>
Total income= 73.5*1.15= $84.53
Answer:
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Step-by-step explanation:
Answer: 4
Step-by-step explanation:
( f o g ) (3) means f(g(3)) so...
First: plug 3 into g(x) = x^ (2-1)
3^ (2-1) is 3^1 = 3
Next: plug 3 into f(x)= 2^(x-1)
2^(3-1) is 2^(2) > 2×2 = 4
