## 1.

The Correct Answer is (B) — If 5x = 5, then we know that x = 1. Plug this value in for x in x + y = 5, and we can find that y=4. The correct answer choice is B.

## 2.

The Correct Answer is (C) — If 2m = 3, then we know that 4m = 6. Substitute 6 in for 4m in the second equation and we have 6 + n = y. The correct answer choice is C.

## 3.

The Correct Answer is (C) — Notice that the two graphs intersect in the first quadrant, where both the x and y values are positive. We also know that the value of x is greater than y at the intersection, so the correct answer choice must be C.

## 4.

The Correct Answer is (A) — If bullets travel at least 10 times the speed of an average arrow, then we can express this as x ≥ 250×10 ≥ = 2500. Since we know the speed of the fastest bullet, we can express a given bullet’s speed as 2500 ≤ x ≤ 4100, choice A.

## 5.

The Correct Answer is (C) — According to the first equation, x > 12, so choices A and B are eliminated. Using the second equation, we can also find that x ≤ 13. Combined, we know that x must be greater than 12, but less than or equal to 13, so the correct answer choice is C.

## 6.

The Correct Answer is (B) — If Victoria sells all her items for $15 each, and she must make at least$800, we can express this relationship as 15x ≥ 800. The correct answer choice is B.