## Second midterm

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Simplify all rational expressions to lowest terms.

1.

In 2 and 3, solve for *x* and check.

2.

3.

4. Graph *y* = 2*x* - 3

5. Find the equation of the line that goes through (1, 4) and (3,
5).

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6. Suppose that you have $500 in the bank after 4 months and $700 in the bank after 6 months. Let *x* denote the number of months
and let *y* be the amount of money in the bank. Write a linear equation that predicts the amount of money in the bank as a
function of the number of months. Use this equation to predict how much
money you would have after 12 months.

7. Solve the following system of simultaneous linear equations by

- a) Graphing
- b) Substitution
- c) Addition

8. Judy has 15 coins, all nickels or dimes. If the coins are worth
$1.05, how many of each type of coin does she have?

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