Find the domain of the rational expression.
A. 
B. 
C. 
D. 
Answer: D
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Solve.A formula for the circumference of a circle is C = 2?r, where r is the radius of the circle. (i) Solve the formula for r. (ii) A circle has a circumference of 42? meters. Find the radius, r, of the circle.
A. (i) r = 
(ii) 21 m
B. (i) r = 
(ii) 42 m
C. (i) r = 
(ii) 7 m
D. (i) r = 
(ii) 11 m
Let x represent the number. Write the English phrase as an algebraic expression. Then simplify the expression, if possible.-3 times the sum of a number and 29.
A. (-3 + x) ? 29; -87 + 29x B. -3x + 29; cannot be simplified C. -3(x + 29); -3 + 29x D. -3(x + 29); -3x - 87
Solve the problem.There are two types of tickets for a school play: student tickets and tickets for the general public. The total cost for one student ticket and one general public ticket is 
The total cost for 10 student tickets and 12 general public tickets is 
How much does a student ticket cost?
A. $1 B. $3 C. $8 D. $2
For the complex fraction, determine the LCD of all the fractions appearing within the expression.
A. 8x(x + 6)2 B. x(x + 6)(x - 4) C. 8x(x + 6)(x - 4) D. 8x2(x + 6)(x - 4)