Fill in the blank with one of the words or phrases listed below. 
An algebraic expression is 
when all like terms have been 
.
A. simplified; constant
B. simplified; combined
C. constant; simplified
D. combined; simplified
Answer: B
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Estimate the percentage.10% of 97,600
A. 976 B. 9,760 C. 1,952 D. 97,600 E. 4,880
Rewrite the trigonometric expression as an algebraic expression involving the variable u. Assume that 
and that the value of the "inner" inverse trigonometric expression represents an angle ? such that 
sin (tan-1 u)
A. 
B. 
C. 
D. u
Estimate by rounding as indicated.There are 27,878,400 square feet in one square mile. How many square feet are there in 33 square miles? Estimate by rounding the number of square feet in one square mile to the nearest ten million and the number of square miles to the nearest ten. Also find the exact answer.
A. Estimate: 900,000,000 sq ft; exact: 919,974,000 sq ft B. Estimate: 840,000,000 sq ft; exact: 919,974,000 sq ft C. Estimate: 900,000,000 sq ft; exact: 919,987,200 sq ft D. Estimate: 840,000,000 sq ft; exact: 919,987,200 sq ft
Convert the polar equation to a rectangular equation.r = 
A. 10x2 + 9y2 - 12x - 36 = 0 B. 8x2 + 9y2 + 12x - 36 = 0 C. 9x2 + 8y2 + 12y - 36 = 0 D. 9x2 + 9y2 + 12x - 36 = 0