Solve the problem.If the taxes on a picture that sells for $380 are $15.20, find the sales tax rate.

A. 5%
B. 6%
C. .5%
D. 4%


Answer: D

Mathematics

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Provide an appropriate response.Add:  0.3874+ 0.9163

A. 0.00013037 B. 1.2937 C. 0.129137 D. 1.3037

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Solve the problem.A stack of poles has 21 poles in the bottom row, 20 poles in the next row, and so on, with 10 poles in the top row. How many poles are there in the stack?

A. 160 B. 196 C. 186 D. 176

Mathematics

Solve the problem.A radio telescope has a parabolic surface. If it is 1 m deep and  wide, how far is the focus from the vertex?A = 8 mB = 1 m

A. 2 m B. 4 m C. 16 m D. 1 m

Mathematics

Solve the problem.A manufacturer has found that the daily demand for a certain item is , where p is the price of the item in dollars. The daily supply is . At what price does supply equal demand? Round your answer to the nearest cent.

A. $6.54 B. $17.15 C. $87.91 D. $7.33

Mathematics