Simplify the expression. Assume that all variables are positive when they appear.
- 
A. 7
B. 4
- 3
C. 3 - 4
D. 3
- 4
Answer: D
Mathematics
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Use implicit differentiation to find the specified derivative at the given point.Find 
at the point (1, 0) for cos xy + yex = 0.
A. 
B. e
C. 1
D. 0
Mathematics
Solve the problem.Zak is paid a weekly salary of $490 plus 6% commission on his weekly sales. Let p be Zak's total salary for s dollars in weekly sales.
A. p = 0.06s + 490 B. p = 6s + 490 C. p = 6s - 490 D. p = 0.06s - 490
Mathematics
Write the fraction in lowest terms.
A. 
B. 
C. 25
D. 
Mathematics
Use the graph to identify the x- and y- intercepts or state that there is no x- or y-intercept.
A. no x-intercept; y-intercept = -4 B. x-intercept = -4; no y-intercept C. x-intercept = -4; y-intercept = 4 D. x-intercept = -4; y-intercept = 0
Mathematics