Add and simplify. If the answer is an improper fraction, write it as a mixed number.
+ 
A. 
B. 
C. 
D. 
Answer: B
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Use the graph of the function f(x) to locate the local extrema and identify the intervals where the function is concave up and concave down.
A. Local minimum at x = 3 ; local maximum at x = -3 ; concave up on (-?, -3) and (3, ?); concave down on (-3, 3) B. Local minimum at x = 3 ; local maximum at x = -3 ; concave up on (0, ?); concave down on (-?, 0) C. Local minimum at x = 3 ; local maximum at x = -3 ; concave down on (0, ?); concave up on (-?, 0) D. Local minimum at x = 3 ; local maximum at x = -3 ; concave down on (-?, -3) and (3, ?); concave up on (-3, 3)
Find the perimeter.A lot has sides measuring 5
, 5
, 3
, and 4
yards.
A. (104 + 20
) yards
B. (72
) yards
C. (52 + 20
) yards
D. (52
+ 20
) yards
Use Pascal's triangle to expand the binomial.(x + 3y)6
A. x6 + 18x5y + 108x4y2 + 486x3y3 + 972x2y4 + 1458xy5 + 729y6 B. x6 + 18x5y + 729x4y2 + 60x3y3 + 729x2y4 + 18xy5 + 3y6 C. x6 + 18x5y + 135x4y2 + 540x3y3 + 1215x2y4 + 1458xy5 + 729y6 D. x6 + 18x5y + 36x4y2 + 54x3y3 + 36x2y4 + 18x y5 + 3y6
Solve the system of linear equations. x + 8y = 4-3x + 9y = -12
A. (5, -1) B. (4, 0) C. (5, 4) D. No solutions