Solve the problem. Round amounts to the nearest tenth if necessary.Suppose that z varies jointly with x and y and that z = 405 when x = 9 and 
Find the constant of variation k. Then use z = kxy to find z when x = 3 and 
A. k = 0.3; z = 3.6
B. k = 5; z = 60
C. k = 54,675; z = 
D. k = 3; z = 36
Answer: D
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Chadmark Corporation's budgeted monthly sales are $3,000. The company sells on credit with terms of 2/10 net 45. Forty (40) percent of Chadmark's customers pay on Day 10 and take the 2 percent discount; the remaining 60 percent pay in the month following the sale (on Day 45), so they pay the full invoice price. What is Chadmark's total cash receipts for a typical month?
A. $1,543 B. $2,976 C. $3,200 D. $1,652 E. $2,408
Solve the equation by the method of your choice.7x2 - 14 = 0
A. { - 
, 
}
B. {- 
, 
}
C. {
}
D. 
Write the exponential equation as an equation involving a logarithm.85/3 = 32
A. log58 = 
B. log328 = 
C. 
= 8
D. log832 = 
Simplify.
A. 8x(x + 8) B. x + 8 C. -(x + 8) D. -(x - 8)