Find the exact value of the expression, if possible. Do not use a calculator.tan-1 
A. - 
B. 
C. 
D. - 
Answer: A
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Solve the problem.Find the mass of the solid in the first octant between the spheres 
and 
if the density at any point is inversely proportional to its distance from the origin.
A. 15k?
B. 
k?
C. 
k?
D. 90k?
Solve the problem.An invoice received from Wharf Seafood Supply is dated Jan 1. The list price of the goods is $3531, with allowed series discounts of 20/10/10. If the cash terms are 4/15 ROG, and the goods were received Jan 15, find the amount to pay in full on Jan 28.
A. $1942.05 B. $2288.09 C. $3531 D. $2196.57
Find the amount of taxable income and the tax owed for the following people. The letter following the name indicates the marital status and all married people are filing jointly. Use $4050 for each personal exemption; $6300 as the standard deduction for single taxpayers, $12,600 for married taxpayers filing jointly, and $9300 for head of household and the following tax rate schedule.
A. $22,205; $2,905.75 B. $20,268; $2,667.70 C. $17,655; $2,184.50 D. $23,955; $3,220.75
Solve the problem.The profit that the vendor makes per day by selling x pretzels is given by the function 
Find the number of pretzels that must be sold to maximize profit.
A. 1.6 pretzels B. 800 pretzels C. 290 pretzels D. 400 pretzels