Find the mistake, then find the correct answer.Solve for x: x2 + 9 = 73line 1 x2 + 9 = 73line 2 
line 3 x2 = 64line 4 
= 
line 5 x = 8
What will be an ideal response?
Line 5 gave only the positive square root. The correct answer is x = ±8.
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The table lists data that are exactly linear. (i) Find the slope-intercept form of the line that passes through these data points. (ii) Predict y when x = -1.5 and 4.6. 
A. y = 2.2x + 7; y = 3.70, y = 17.12 B. y = 2.2x - 7; y = -10.3, y = 3.12 C. y = -2.2x - 7; y = -3.7, y = -17.12 D. y = -2.2x + 7; y = 10.3, y = -3.12
Solve the problem.A box with an open top is formed by cutting squares out of the corners of a rectangular piece of cardboard and then folding up the sides. If x represents the length of the side of the square cut from each corner, and if the original piece of cardboard is 18 inches by 11 inches, what size square must be cut if the volume of the box is to be 180 cubic inches? 
A. 2 in. by 2 in. square B. 12 in. by 12 in. square C. 3 in. by 3 in. square D. 5 in. by 5 in. square
Factor.5x2 + 15x
A. x(5x + 15) B. 5x(x + 15) C. 5x(x + 3) D. 5x2(x + 3)
The given pattern continues. Write down the nth term of the sequence {an} suggested by the pattern.1, 
, 
, 
, ...
A. an = 
B. an = 
C. an = 
D. an = 