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) = -2x - 2, [0, 2], left-hand endpoint
A. 
B. 
C. 
D. 
Answer: D
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Use the rules for exponents to rewrite the expression and then evaluate the new expression. (72)-1
A. 
B. - 
C. -14
D. -49
Identify the like terms in the given expression. Then identify the coefficients of the like terms.8x2y + 9xy + 
xy2 + 12x + 8xy + 
x2y3 + 12
A. Like Terms: 8xy and 12x
Coefficients: 8 and 12
B. Like Terms: 9 and 8
Coefficients: 9xy and 8xy
C. Like Terms: 8x2y and 
xy2
Coefficients: 8 and 
D. Like Terms: 9xy and 8xy
Coefficients: 9 and 8
The graph and equation of a polynomial f(x) are given. Determine the number of real zeros and the number of imaginary zeros.f(x) = 3x5 - 20x3 + 15x + 3
A. Five real zeros; four imaginary zeros B. Five real zeros; two imaginary zeros C. Five real zeros; no imaginary zeros D. One real zero; no imaginary zeros
Solve the problem.Assume it costs 25 cents to mail a letter weighing one ounce or less, and then 20 cents for each additional ounce or fraction of an ounce. Let L(x) be the cost of mailing a letter weighing x ounces. Graph y = L(x).
A.
B. 
C.
D. 