Perform the requested operation on the given function.f(x) = 7x2 - 4x, g(x) = x2 - 2x - 8Find 
(x).
A. 
B. 
C. 
D. 
Answer: C
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Solve the equation.4x2 - 5x - 9 = 0
A. x = 
, -1
B. x = 
, 1
C. x = 
, 0
D. x =
, -1
Solve the problem.The revenue from the sale of a product is given by R = 1420x - 17x2 - x3. If the sale of 10 units gives a total revenue of $11,500, use synthetic division to find another number of units that will give $11,500 in revenue.
A. 28 units B. 23 units C. 50 units D. 13 units
Solve the problem.An agricultural research scientist is developing three new crop growth supplements -- A, B, and C. Each pound of each supplement contains four enzymes -- E1, E2, E3, and E4 -- in the amounts (in milligrams) shown in the table.
The cost of E1 is $20/mg, the cost of E2 is $40/mg, the cost of E3 is $10/mg, and the cost of E4 is also $10/mg. The growth benefit for crops is expected to be proportional to 10 times the amount of A used, 25 times the amount of B used, and 60 times the amount of C used. However, the total cost of the enzymes used in A, B, and C must be less than $5000 for each treatment. How many pounds each of A, B, and C should be produced to maximize
the growth effect? A.
| 0, 9.3, 10.0 |
B. 0, 0, 15
C. 9.0, 0, 9.5
D. 3.0, 3.0, 4.0
Simplify the radical. Assume that all variables represent positive numbers.
A. 8x
B. 7x2
C. 8
D. 448x