Find the difference and simplify the answer.  - 

A.
B.
C.
D.


Answer: C

Mathematics

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The resident population of Oklahoma in 1990 was 3.14 million. From 1990 to 2000 the average rate of change in population was 0.21 million people per year.  Use these facts to estimate the Oklahoma resident population in 1992. ?

A. 3.56 million B. 3.46 million C. 3.35 million D. none of the above

Mathematics

Solve the system.

A. (-4, 1, 3) B. (3, -4, 1) C. (-4, 3, 1) D. no solution

Mathematics

Write an algebraic equation and use it to solve the problem.A promotional deal for long distance phone service charges a $15 basic fee plus $0.05 per minute for all calls. If Joe's phone bill was $52 under this promotional deal, how many minutes of phone calls did he make? Round to the nearest integer, if necessary.

A. 7 minutes B. 2 minutes C. 740 minutes D. 1340 minutes

Mathematics

Find the value for the function.Find f(-9) when f(x) = |x|- 6.

A. -15 B. 3 C. 15 D. -3

Mathematics