Simplify the expression by using the order of operations.8 ? 
? 
÷ 4 + 6 - 3 + 1
A. 47
B. 44
C. 43
D. 48
Answer: B
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Simplify the expression. Express the answer so that only positive exponents occur. Assume that all variables are positive.x1/8 ? x7/8
A. 
B. x7/8
C. x
D. x7/64
The eccentricity is given of a conic section with one focus at the origin, along with the directrix corresponding to that focus. Find a polar equation for the conic section. e = 1/2, x = 9
A. r = 
B. r = 
C. r = 
D. r = 
Solve.When the temperature stays the same, the volume of a gas is inversely proportional to the pressure of the gas. If a balloon is filled with 160 cubic inches of a gas at a pressure of 14 pounds per square inch, find the new pressure of the gas if the volume is decreased to 32 cubic inches.
A. 70 pounds per square inch
B. 56 pounds per square inch
C. 
pounds per square inch
D. 65 pounds per square inch
Write fraction notation for the given decimal notation. Do not simplify.0.00409
A. 
B. 
C. 
D. 