Provide an appropriate response.Suppose that A is an m × n matrix and B is a p × q matrix. Under what condition(s) can the product AB be found? Under what condition(s) can the product BA be found?
A. AB can be found if m = p;
BA can be found if n = q.
B. AB can be found if q = m;
BA can be found if n = p.
C. AB can be found if n = p;
BA can be found if q = m.
D. AB can be found if m = q and n = q;
BA can be found under the same conditions.
Answer: C
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3x(7x + 9y) + 8x(y + 4) =
a. 21x + 27xy + 8y + 32x b. 21x2 + 35xy + 32 c. 21x + 35xy + 32y + 4 d. 21x2 + 32x + 35xy e. 21x2 + 17xy + 8x + 4
Determine whether the positive or negative sign makes the equation correct. Do not use a calculator.sin 114.5° = ±
A. Positive B. Negative
Provide an appropriate response.Use the equation (Dividend) = (Divisor)(Quotient) + (Remainder) to complete the following. 
= x3 - 2x2 + 4x - 8 + 
implies x4 - 17 = (x + 2) x 
+ 
.
A. x3 - 2x2 + 4x - 8; 
B. x3 - 2x2 + 4x - 8; 1
C. x3 - 2x2 + 4x - 8; 2
D. x3 - 2x2 + 4x - 8; x + 2
Solve the inequality, and graph the solution set.
< x
A. (-?, 3) ? (7, ?)
B. (3, 7)
C. (0, 3) ? (7, ?)
D. (7, ?)