Write as an addition problem and find the sum.The team gained 13 yards on the first play, lost 7 yards on the second, and then gained another 11 yards on the third. What was their net gain or loss?
A. 13 + -7 + 11 = 31 yards
B. 13 + -7 + 11 = 17 yards
C. 13 + 7 + 11 = 31 yards
D. 13 + 7 + 11 = 17 yards
Answer: B
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Graph the function f(x) over the given interval. Partition the interval into 4 subintervals of equal length. Then add to your sketch the rectangles associated with the Riemann sum 
, using the indicated point in the kth subinterval for ck.f(x) = x2 - 1, [0, 8], left-hand endpoint
A. 
B. 
C. 
D. 
Provide an appropriate response.Identify 9x + 19x5 + 8 as a monomial, binomial, or trinomial. Give the degree of the polynomial.
A. Trinomial, degree 5 B. Trinomial, degree 7 C. Binomial, degree 6 D. Trinomial, degree 6
Simplify.
A. 8 B. 128 C. 64 D. 4
Solve the system by the substitution method.
A. (6, -5), (5, -6) B. (6, 5), (-5, -6) C. (-6, -5), (-5, -6) D. (-6, 5), (-5, 6)