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 = 
Show that A + B = B + A.
What will be an ideal response?
A + B = 
; B + A = 
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Express the vector as a product of its length and direction.-7i + 7j + 7k
A. 7( -i + j + k)
B. 7
C. 7
D. 
Solve the problem.The height of an egg after t seconds when thrown straight up with an initial speed of 128 feet per second from a height of 224 feet is given by the polynomial 
Write this polynomial in factored form.
A. -4(4t2 - 32t - 56) B. -16(t2 - 8t - 14) C. 2(-8t2 + 64t + 112) D. 16(-t2 + 8t + 14)
Sketch the graph of f(x). Determine the domain, range, and the equation of the horizontal asymptote of the function.f(x) = 5 - e-x
A. Domain: (-?, ?), range: (-?, 5)
Horizontal asymptote: y = 5
B. Domain: (-?, ?), range: (-?, 5)
Horizontal asymptote: y = 5
C. Domain: (-?, ?), range: (5, ?)
Horizontal asymptote: y = 5
D. Domain: (-?, ?), range: (5, ?)
Horizontal asymptote: y = 5
Solve the problem.Robert and Paul each took some chips from a bag of potato chips which contains 15
ounces of chips. Robert took 2
ounces of chips and Paul took 1
ounces of chips. How many ounces of chips were left in the bag?
A. 11
ounces
B. 13
ounces
C. 12
ounces
D. 12
ounces