**PART 1**

1 Given:

X = {1, 2, 3, 4}

Y = {2, 3, 4, 5}

Z = {3, 4, 5, 6}

What is the intersection of sets X, Y, and Z ?

(1) {3, 4} (3) {3, 4, 5}

(2) {2, 3, (4} (4) {1, 2, 3, 4, 5,
6}

2 Which graph could be used to find the solution of the
system of

equations y = 2x + 6 and y = x^{2} + 4x + 3?

3 What is the relationship between the independent and
dependent

variables in the scatter plot shown below?

(1) undefined correlation (3)
positive correlation

(2) negative correlation (4)
no correlation

4 Tim ate four more cookies than Alice. Bob ate twice as many
cookies as

Tim. If x represents the number of cookies Alice ate, which
expression

represents the number of cookies Bob ate?

(1) 2 + (x + 4) (3) 2(x + 4)

(2) 2x + 4
(4) 4(x + 2)

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