Multiply.(x2 - 0.7)(x2 + 0.7)
A. x2 - 0.49
B. x2 + 0.49
C. x4 + 0.49
D. x4 - 0.49
Answer: D
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Solve the problem.Find the derivative of the function 
at the point 
in the direction in which the function increases most rapidly.
A. 
B. 
C. 
D. 3
Evaluate the logarithm.log 0.0000001
A. -1 B. -7 C. 7 D. -10
Solve.To determine the tip on a restaurant bill, a patron rounds his bill to the nearest dollar and then calculates 10% of that dollar amount. If the bill came to $27.84, determine the tip that he left.
A. $2.80 B. $2.70 C. $3.00 D. $2.90
Define a relation R from R to R as follows: For all (x, y) ? R×R, (x, y) ? R if, and only if, x = y^2 + 1.
(a) Is (2, 5) ? R? Is (5, 2) ? R? Is (?3) R 10? Is 10 R (?3)? (b) Draw the graph of R in the Cartesian plane. (c) Is R a function from R to R? Explain.