Find the amount of sales tax or tax rate and the total cost. Round money answers to the nearest cent if necessary.Amount of sale: $670 Tax rate: 4%
A. $20.10, $690.10
B. $268.00, $938.00
C. $26.80, $696.80
D. $33.50, $703.50
Answer: C
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An open box is to be constructed from a piece of cardboard 24 cm by 35 cm by cutting squares of side length x from each corner and folding up the sides, as shown in the figure.
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(a) Express the volume V of the box as a function of x.
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__________
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(b) What is the domain of V? (Use the fact that length and volume must be positive.)
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__________ 
__________
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(c) Draw a graph of the function V and use it to estimate the maximum volume for such a box. Please round the answer to the nearest whole number.
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__________ cm3
What will be an ideal response?
Find the value of the objective function at each corner of the graphed region. Use this information to answer the question.
Objective Function z = 4x + yWhat is the maximum value of the objective function?
A. 50 B. 35 C. 13 D. 32
Provide an appropriate response.The face value of a promissory note is the amount due to be paid at maturity.
A. True B. False
Solve the problem.Jack is currently driving into a headwind (17% decrease). If his normal mileage is 50 mpg, what will his car's mileage be in the headwind? Round your answer to the nearest tenth.
A. 67 mpg B. 7.3 mpg C. 50 mpg D. 41.5 mpg