Solve.Brian buys a book for a class he is taking. To find the sales tax, he needs to multiply by 0.075. What must he pay in sales tax for the book if the selling price is $31? Round the answer to two decimal places.
A. $2.53
B. $2.33
C. $2.38
D. $2.23
Answer: B
Mathematics
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Find the gradient field F of the function f.f(x, y, z) = ln
+ z10
A. F = 
i + 
j + 
k
B. F = 
i + 
j + 
k
C. F = 
i + 
j + 
k
D. F = 
i + 
j + 
k
Mathematics
Write the ratio in fractional notation in lowest terms.4 inches to 15 feet
A. 
B. 
C. 
D. 45
Mathematics
Find the mode of the set of numbers.109, 141, 156, 109, 188, 199, 162
A. 86 B. 109 C. 141 D. 156
Mathematics
Tell what was done to the first equation to get the second equation. x–5 = -2; x=3
A) 5 was subtracted from both sides of the first equation. B) 5 was added to both sides of the first equation. C) Both sides of the first equation were multiplied by 5. D) Both sides of the first equation were divided by 5. E) -5 was added to both sides of the first equation.
Mathematics