The demand function for a product is 
, where p is the number of dollars and x is the number of units. If the equilibrium price is $20, what is the consumer's surplus?
?
A. $1,130
B. $400
C. $1,190
D. $745
E. $485
Answer: B
Mathematics
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Divide using long division.
A. p - 9 + 
B. p + 3 + 
C. p - 3 + 
D. p - 3
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Find all values of x satisfying the given conditions.y1 = (x + 2), y2 = (x - 7), and y1y2 = 4
A. 
B. 
C. 
D. 
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Perform the indicated operations.(3z2 + 4z - 7) + (z3 + 4z + 2)
A. 4z3 + 8z - 5 B. 4z2 + 8z - 5 C. z3 + 3z2 + 8z - 5 D. z3 + 3z2 + 8z + 5
Mathematics
Approximate the area under the graph of f(x) over the specified interval by dividing the interval into the indicated number of subintervals and using the left endpoint of each subinterval.f(x) = 0.02x3 + 11; interval [-8, 0]; 4 subintervals
A. 38.24 B. 76.48 C. 28.00 D. 56.00
Mathematics