Find if  and the tangent line at  has the slope

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?



A.
B. ?
C. ?
D. ?
E. ?

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Answer: D

Mathematics

Evaluate the expression.-  

A. - 
B. -18
C. 18
D.

Simplify the rational expression.

A.
B.
C.
D.

Simplify. Assume that all exponents represent natural numbers.(9x2r - xr - 1) + (x2r + 4xr + 4)

A. 10x4r + 5x2r + 5 B. 10x2r + 3xr + 3 C. 9x2r + 4xr + 4 D. 8x4r - 5x2r - 5

Use the total differential to approximate the quantity. Then use a calculator to approximate the quantity, and give the absolute value of the difference of the two results to four decimal places.0.97e0.02

A. 1; 0.9896; 0.0104 B. 1.01; 0.9896; 0.0204 C. 0.99; 0.9896; 0.0004 D. 0.99; 1; 0.0100