Use a proportion to solve the problem.The nutritional chart on the side of a box of breakfast cereal states that there are 150 calories in a 1
serving. How many calories are there in 7 cups of the cereal?
A. 840 calories
B. 27 calories
C. 1050 calories
D. 798 calories
Answer: A
Mathematics
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The letters r and ? represent polar coordinates. Write the equation using rectangular coordinates (x, y).r = 1 + 2 sin ?
A. x2 + y2 = 
+ 2x
B. x2 + y2 = 
+ 2y
C. 
= x2 + y2 + 2x
D. 
= x2 + y2 + 2y
Mathematics
Find the domain of f.f(x) = 
A. {x | x ? 9} B. {x | x ? 5} C. {x | x ? -5} D. {x | x ? 0, x ? -5}
Mathematics
Simplify the expression.
3
A. 
B. 1
C. - 
D. 
Mathematics
Express the number in scientific notation.0.000000831012
A. 8.31012 × 10-6 B. 8.31012 × 10-7 C. 8.31012 × 106 D. 8.31012 × 107
Mathematics