Solve the system mentally, without the use of a calculator or pencil-and-paper calculation. Try to visualize the graphs of both lines.x + 0y = 90x + y = 4
A. x = 9; y = 4
B. x = 4; y = 9
C. x = 9; y = 2
D. x = 2; y = 
Answer: A
Mathematics
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Solve the problem.A company makes three chocolate candies: cherry, almond, and raisin. Matrix A gives the amount of ingredients in one batch. Matrix B gives the costs of ingredients from suppliers R and S. Multiply the matrices. 
A = 
B = 
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A. R S
AB = 
B. R S
AB = 
C. R S
AB = 
D. R S
AB = 
Mathematics
Simplify the expression.eln 4.2
A. 4.2 B. 11.42 C. 66.69 D. 1.44
Mathematics
Express the inverse of the given statement symbolically.Add 5 to x then multiply the result by -15.
A. -15(x + 5)
B. 
- 5
C. - 
D. 5(x - 15)
Mathematics
Find only the rational zeros.f(x) = x4 + 3x3 + 3x2 - 6x - 27
A. -3, -3 B. -3, 2 C. 3, -1 D. No rational zeros
Mathematics