Simplify. Assume that all variables are nonnegative.
A. 144ab4
B. 12ab6
C. 12ab4
D. 144ab6
Answer: C
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Write a positive or negative integer that describes the situation.A football team gained 4 yards on one play.
A. -4 B. 4
A women's clothing chain takes inventory of one brand of sweater. The sweaters come in 3 sizes: small, medium, and large, and 5 colors. The inventories at stores A, B, and C are represented by the matrices below. 
A = 
; B = 
; C = 
Use the matrix operations on a graphing calculator to show that A + (B + C) = (A + B) + C.
What will be an ideal response?
Find the slope of the line through the points and interpret the slope. 
A. 
; for every 7-unit increase in x, y will increase by 1 unit
B. -7; for every 1-unit increase in x, y will decrease by 7 units
C. - 
; for every 7-unit increase in x, y will decrease by 1 unit
D. 7; for every 1-unit increase in x, y will increase by 7 units
Find the limit.
A. -?
B. ?
C. -1
D. 