Use front-end rounding to round each number. Then, add or subtract the rounded numbers to get an estimated answer. Finally, find the exact answer.What is 8.39 less 1.534?

A. Estimate: 7; exact: 7.866
B. Estimate: 6; exact: 6.856
C. Estimate: 6; exact: 6.866
D. Estimate: 7; exact: 7.856


Answer: B

Mathematics

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Find the linear approximating polynomial for the function centered at a.f(x) = , a = 0

A. L(x) = x - 4
B. L(x) = x - 4
C. L(x) = x + 4
D. L(x) = x + 4

Mathematics

Solve. - x = -1

A. - 
B.
C.
D. - 

Mathematics

Solve the problem.At Allied Electronics, production has begun on the X-15 Computer Chip. The total revenue function is given by and the total profit function is given by , where x represents the number of boxes of computer chips produced. The total cost function, C(x), is such that  Find C(x).

A. C(x) = -0.3x2 + 12x + 10 B. C(x) = 8x + 6 C. C(x) = 6x + 10 D. C(x) = 7x + 15

Mathematics

Solve the inequality. Graph your solution on a number line, and write your solution in interval notation.6 -  ? -9

A. (-?, 12)

B. (-?, -18] ? [12, ?)

C. [-15, 15] 

D. [-18, 12]

Mathematics