Find the product.(x + 4y)3
A. 3(x + 4y)
B. x3 + 64y3
C. x3 + 4x2y + 8xy + 16xy2 + 32y2 + 64y3
D. x3 + 12x2y + 48xy2 + 64y3
Answer: D
Mathematics
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Solve.
y2 + 13y - 18 = 0
A. - 
, 6
B. 
, -6
C. - 
, -6
D. 
, 6
Mathematics
Add or subtract, as indicated. Assume that all variables represent positive real numbers.x
+ 7
- 3x
A. 13x
B. 4x
C. 13x
D. 4x
Mathematics
Suppose that the demand function for an appliance is 
where q is the number of units and p is in dollars. What is the consumer's surplus if the equilibrium price is $17.6 and the equilibrium quantity is 21? Round your answer to the nearest dollar.
?
A. $473 B. $475 C. $811 D. $848 E. $474
Mathematics
Solve for x.2-3x + 5 = 
A. x = 
B. x = 8
C. x = 3
D. x = -3
Mathematics