Factor the expression completely.x3 - x2 - 42x
A. (x2 + 1)(x - 42)
B. Prime
C. x(x + 6)(x - 7)
D. x(x + 7)(x - 6)
Answer: C
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Find the product using the FOIL method.(z - 9)(z - 9)
A. 2z2 - 81 B. z2 - 18z + 81 C. z2 + 18z - 81 D. 2z + 81
A small country exports soybeans and flowers. Soybeans require 8 workers per acre, flowers require 12 workers per acre, and 100,000 workers are available. Government contracts require that there be at least 3 times as many acres of soybeans as flowers planted. It costs $250 per acre to plant soybeans and $300 per acre to plant flowers, and there is a budget of $3 million. If the profit from soybeans is $1,400 per acre and the profit from flowers is $2,000 per acre, find the maximum profit. Round the answer to the nearest tenth of million.
A. $17.3 million B. $21.7 million C. $14.3 million D. $15.2 million E. $16.2 million
Use Euler's method to approximate the indicated function value to three decimal places using 
= 
; y(0) = 2; find y(0.3)
A. 2.015 B. 2.005 C. 2.030 D. 2.024
Solve the equation.
a - 
= -3
A. -7 B. 7 C. 5 D. -5