Answer the question.Use the example below to demonstrate how to add or subtract two fractions by finding the least common denominator. Show why it is advantageous to use the least common denominator instead of another common denominator.
+ 
What will be an ideal response?
The lcd is (-4t - 5)(t + 3)(-5t - 2). If one uses (-4t - 5)(t + 3)2(-5t - 2), the work becomes more complicated, and the answer will definitely need to be reduced to lowest terms. In this case the answer should be 
.
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Use rational exponents to simplify the radical. If rational exponents appear after simplifying, write the answer in radical notation.
A. 
B. 
C. 
D. 
Find the perimeter or area of the figure as indicated. Express your answer in simplified radical form.Find the area of the rectangle.
A. 24
sq ft
B. 72 sq ft
C. 8
sq ft
D. 24 sq ft
Write the complex number in polar form. Express the argument in degrees, rounded to the nearest tenth, if necessary.-5i
A. 5(cos 90° + i sin 90°) B. 5(cos 0° + i sin 0°) C. 5(cos 270° + i sin 270°) D. 5(cos 180° + i sin 180°)
Provide an appropriate response.You are asked to change 
to a mixed number. What should be your first step?
A. Multiply 25 and 24. B. Divide 24 by 25. C. Add 25 and 24. D. Divide 25 by 24.