Solve the system by elimination, or by any convenient method.
?
A. 
and 
B. 
and 
C. 
and 
D. 
and 
E. There is no solution to the equations.
Answer: E
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If the number in the sentence is in scientific notation, convert it to decimal notation. If the number in the sentence is in decimal notation, convert it to scientific notation.The life span of the average male human being is approximately 37,843,200 minutes.
A. 3.78432 × 107 minutes B. 3.78432 × 105 minutes C. 37.8432 × 106 minutes D. 3.78432 × 106 minutes
The graph shows a region of feasible solutions. Find the maximum or minimum values of the given expression.Find the maximum and minimum of 16x - 20y.
A. -120, 0 B. -80, -120 C. 80, -120 D. 80, 0
Solve the problem.Roberto invested some money at 8%, and then invested $5000 more than twice this amount at 12%. His total annual income from the two investments was $4760. How much was invested at 12%?
A. $3100 B. $31,000 C. $15,000 D. $26,000
Simplify the expression.
- 
A. 
B. 
C. 
D. 