Solve the problem.A salesperson has two job offers. Company A offers a weekly salary of $160 plus commission of 8% of sales. Company B offers a weekly salary of $320 plus commission of 4% of sales. What is the amount of sales above which Company A's offer is the better of the two?

A. $4000
B. $4100
C. $2000
D. $8000


Answer: A

Mathematics

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Solve the given differential equation.(9x2 - 8x)dx - dy = 0

A. 3x3 - 4x2 + C B. 3x3 - 8x2 + C C. 9x3 - 8x2 + C D. 9x3 - 4x2 + C

Mathematics

Use implicit differentiation to find dy/dx.e6x = sin(x + 4y)

A.  = - 
B.  = 
C.  = 
D.  = 

Mathematics

Solve the problem.A rectangle has a perimeter of 40 ft and a length of 10 ft. Find the width of the rectangle.

A. 30 ft B. 20 ft C. 10 ft D. 8 ft

Mathematics

Find the vertex, focus, and directrix of the parabola. Graph the equation.y2 + 8y = 8x + 40

A. vertex: (-7, -4)
focus: (-9, -4)
directrix: x = -5

B. vertex: (-7, -4)
focus: (-7, -6)
directrix: y = -2

C. vertex: (-7, -4)
focus: (-5, -4)
directrix: x = -9

D. vertex: (-7, -4)
focus: (-7, -2)
directrix: y = -6

Mathematics