Determine whether the graph of the given function is symmetric with respect to the y-axis, symmetric with respect to the origin, or neither.f(x) = 
+ 2
A. y-axis
B. Origin
C. Neither
Answer: A
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Factor by grouping.x2 - 7x + 9x - 63
A. (x - 7)(x + 9) B. (x - 1)(x + 63) C. (x - 7)(x - 9) D. (x + 7)(x - 9)
Solve the problem.The profit (in thousands of dollars) that a company earns from producing x tons of brass and y tons of steel can be approximated by 
Find the amount of brass and steel that maximize profit and find the value of the maximum profit.
A. 
tons of brass and 
tons of steel; maximum profit is $157,977
B. 3 tons of brass and 6 tons of steel; maximum profit is $216,000
C. 
tons of brass and 
tons of steel; maximum profit is $118,833
D. 6 tons of brass and 3 tons of steel; maximum profit is $216,000
Solve the problem. Assume that relative maximum and minimum values are absolute maximum and minimum values.A firm produces two kinds of tennis balls, one for recreational players which sells for $2.50 per can, and one for serious players which sells for $4.00 per can. The total revenue from the sale of x thousand cans of the first ball and y thousand cans of the second ball is given by 
The company determines that the total cost, in thousands of dollars, of producing x thousand cans of the first ball and y thousand cans of the second ball is given by 
Find the
number of each type of ball which must be produced and sold in order to maximize the profit. A. 2000 of the $2.50 cans and 5000 of the $4.00 cans B. 4000 of the $2.50 cans and 3000 of the $4.00 cans C. 3000 of the $2.50 cans and 4000 of the $4.00 cans D. 5000 of the $2.50 cans and 3000 of the $4.00 cans
Find the solution to the system of equations by substitution.x + y = -5x - y = 14
A. 
B. 
C. 
D. 