Calculate using the rules for order of operations.?7 + 6? ? 63 + 7

A. 2815
B. 223
C. 2801
D. -2801


Answer: A

Mathematics

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Evaluate.

A. -4 B. -5 C. 4 D. -3

Mathematics

Find the value of d2y/dx2 at the point defined by the given value of t.x = t + cos t, y = 2 - sin t, t = 

A. -2
B. -4
C. -
D.

Mathematics

Provide an appropriate response.John has been a teacher at West Side High School for the past 12 years. His salary during that time can be modeled by the linear equation y = 800x + 33,000 where x is the number of years since he began teaching at West Side and y is his salary in dollars. Explain what the slope, 800, represents in this context.

What will be an ideal response?

Mathematics

Simplify the expression. If any variables are present, assume that they are positive. ? 

A. x3y8
B. x3y4
C. x3y8
D. x3y9

Mathematics