Write the whole number in word form.8447
A. eight hundred four, forty-seven
B. eight thousand, four hundred forty-seven
C. eight hundred thousand, four hundred forty-seven
D. eighty-four thousand, forty-seven
Answer: B
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Solve the problem.A moving firm charges a flat fee of $30 plus $25 per hour. Find the cost C(x) of using the moving firm for x hours.
A. C(x) = 25x - 30 B. C(x) = 30x - 25 C. C(x) = 25x + 30 D. C(x) = 30x + 25
Find the term that should be added to the expression to form a perfect square trinomial. Write the resulting perfect square trinomial in factored form.x2 - 3x
A. 
; 
2
B. 
; 
2
C. 0; 
2
D. 9; 
2
Use the laws of exponents to simplify each expression using positive exponents only. Assume all variables represent nonzero real numbers.x5 x-2
A. -x3
B. x3
C. - 
D. 
The letters r and ? represent polar coordinates. Write the equation using rectangular coordinates (x, y).r(1 - 2 cos ?) = 1
A. x2 + y2 = 1 + 2x
B. 
= 2 + x
C. x2 + y2 = 2 + x
D. 
= 1 + 2x