Solve.If 16 is added to a number and the sum is doubled, the result is 11 less than the number. Find the number.

A. 21
B. -21
C. -5
D. -43


Answer: D

Mathematics

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Solve the system of equations by the elimination method. Check your solutions. For any dependent equations, write your answer in the ordered pair form.

A. {(1, 0)} B. ? C. {(-1, 0)} D. {(0, 1)}

Mathematics

Solve the problem.Two friends decide to meet in Chicago to attend a Cub's baseball game. Rob travels  in the same time that Carl travels  Rob's trip uses more interstate highways and he can average  more than Carl. What is Rob's average speed?

A. 39 mph B. 32 mph C. 35 mph D. 43 mph

Mathematics

Evaluate.

A. 1 B. 24 C. 0 D. 4

Mathematics

Find absolute maximum and minimum values of the function, if they exist, over the indicated interval. Where no interval is specified, use the real line. List your answers in terms of ordered pairs.

f (x) = ?4x2 + 5x ? 3

Mathematics