Solve each system by substitution.

1) y=62-11

-2x-3y=-7

How do I do this

In 2011 a country's federal receipts (money taken in) totaled $2.36trillion. In 2013, total federal receipts were $2.68 trillion.

To finance her community college education, Sarah takes out a loan for $4300. After a year Sarah decides to pay off the interest, which is 7 % of $4300. How much will she pay? Sarah will pay $ nothing.

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if I'm in a plane flying at 512 miles per hour and a plane flies below me in the opposite direction, will it appear to fly slow or fast