3 years ago

Solving systems by elimination, subtraction 3x-2y= -1 3x-4y= 9

1 answer:

7 0

Multiply 3x-4y=9 by -1 to get -3x+4y=-9
Add 3x-2y=-1 and -3x+4y=-9 to get 2y=-10
Divide both sides by 2 and you get y=-5
Now, substitute y back into any equation, I'm going to choose 3x-2y=-1, and you get 3x-10=-1.
Add 10 to both sides and you get 3x=9, divide both sides by 3 to get x=3.
Hopefully this helps~

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68. If Fran can only pay $250 per month, what is the most expensive boat she can buy without a down payment?

damaskus [11]

Answer:

If she buys a boat without a down payment, then the affordable price is 5,700.

Step-by-step explanation:

Her bank charges 5% interest per year.

Let, payment = p,

p = 250(\frac{1-(1+\frac{0.05}{12})^-24}{\frac{0.05}{12}})

p = 5698.47

After round off p = 5700

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