For the given arithmetic series, what is Sn?a1 = 28, d = 4, and n = 31
A. 5456
B. 2756
C. 10,912
D. 2728
Answer: D
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Solve the problem.Andrea is having her yard landscaped. She obtained an estimate from two landscaping companies. Company A gave an estimate of $210 for materials and equipment rental plus $45 per hour for labor. Company B gave an estimate of $300 for materials and equipment rental plus $30 per hour for labor. Determine how many hours of labor will be required for the two companies to cost the same.
A. 10 hr B. 9 hr C. 6 hr D. 5 hr
Find the coordinates of (a) the vertex and (b) the x-intercepts of the given quadratic function to the nearest hundredth.P(x) = - 
x2 + 1.78x + 1.39
A. (a) (0.28, 1.39) (b) (0.89, 0), (0.70, 0) B. (a) (0.28, 1.64) (b) (-0.44, 0), (1.00, 0) C. (a) (0.25, 1.84) (b) (1.39, 0), (-1.39, 0) D. (a) (1.64, 1.39) (b) There are no x-intercepts.
Simplify the exponential expression.(3x2)3(2x)-1
A. 6x5
B. 6x4
C. 
D. 
Solve.A tent has the dimensions shown in feet. Find the pitch (slope) of the left side of the roof.
A. - 
B. 1
C. 
D. 