## Second midterm

## Spring 1998

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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 = 2x - 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 tyope of coin does she have?

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