Provide an appropriate response.If the expression 49x2 - 9y2 is written in the form a2 - b2, then 
and 
A. a = 7x; b = 3y
B. a = 3; b = 7
C. a = 3x; b = 7y
D. a = 7; b = 3
Answer: A
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Find the values of x for which the given function is concave up, the values of x for which the function is concave down, and any points of inflection.y = 
x4 - x3 + 12
A. Concave down for 0 < x < 2, concave up for x < 0, x > 2, points of inflection at (0, 12) and (2, 8) B. Concave down for x < 2, concave up for x > 2, point of inflection at (2, 8) C. Concave up for 0 < x < 2, concave down for x < 0, x > 2, points of inflection at (0, 12) and (2, 8) D. Concave up for x < 0, concave down for x > 0, point of inflection at (0, 12)
Solve using the addition principle and/or the multiplication principle.
+ y = -9
A. - 
B. - 
C. 
D. -41
Determine whether the sequence is arithmetic. If the sequence is arithmetic, determine the first term a and common difference d.2, -3, -8, -13, -18, . . .
A. Arithmetic; a = 2, d = -5 B. Not arithmetic
Decide if the expression is factored.(1 + 4p)(3p - 4)
A. No B. Yes