CCA year 1 of 2 Review

If the difference (3x²-2x+5) - (x²+3x-2) is multiplied by (1/2)x² what is the result written in standard form?

• 2x²-5x+7

• 4x²+5x-3

• x⁴- (5/2)x³ + (7/2)x²

• 2x³+5x²+3x

Determine the smallest integer that makes -3x+7-5x<15 true.

• -1

• 0

• -2

• 1

The function t(x) is shown in the table. Determine whether t(x) is linear or exponential.

• Linear

• Exponential

Graph f(x)=|x| and g(x)= -x²+6. Does f(-2) = g(-2)?

• Yes, I graphed it on the calculator and hit ctrl t, at x= -2 on the table they have the same value.

• No, when I substituted in -2 for x on the calculator |-2| is not equal to -(-2)²+6

What is the equation of the inequality shown in the graph?

• y> 2x-4

• y< 2x-4

• y> 2x-4

• y< 2x-4

For a class picnic, two teachers went to the same store to purchase drinks. One teacher purchased 18 juice boxes and 32 bottles of water, and spent $19.92. The other teacher purchased 14 juice boxes and 26 bottles of water, and spent $15.76.

Write a system of equations to represent the cost of juice boxes, j and bottles of water , w

• 18j + 32w = 19.92

  14j +26w = 15.76

• 18j +14j = 19.92

  32w+26w=15.76

• 19.92 + 32w = j

  15.76 + 18j = w

• 18j + 26w = 19.92

  14j + 32w = 15.76