Use DeMoivre's Theorem to write the expression in rectangular form.(- 
+ i)6
A. -64
B. 64i
C. 64 - 64
i
D. -64
+ 64i
Answer: A
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You buy cups for $6.44 each and saucers for $6.46 each. To sell cup and saucer sets, you mark up each item by 5 dollars ($6 for each cup and $6 for each saucer). You give preferred customers a 7% discount. ? A. How much would you charge a preferred customer for 1 cup and saucer set? ? B. Use your answer to part A to write a formula that gives the price P, in dollars, you charge a preferred customer for n cup and saucer sets. ? C. Use functional notation to indicate the price you charge a preferred customer for 25 cup and saucer sets.
What will be an ideal response?
Find parametric equations for the rectangular equation.y = x4 + 1
A. x = t2, y = t4 + 1; 0 ? t < ? B. x = t, y = t2 + 1; 0 ? t < ? C. x = t2, y = t2 + 1; 0 ? t < ? D. x = t, y = t4 + 1; 0 ? t < ?
Solve the problem.The area of a circle varies directly as the square of the radius of the circle. If a circle with a radius of 
has an area of 78.5 square inches, what is the area of a circle with a radius of 18 inches?
A. 1019.76 in2 B. 1017.36 in2 C. 56.52 in2 D. 113.04 in2
Perform the indicated operations.( 7x2y - 2xy2 + 2xy - 5) + ( -3x2y - 8xy2 + 5xy + 8)
A. 5x2y2 - 13 B. 4x2y - 10xy2 + 7xy + 3 C. 10x2y - 9xy2 + 8xy + 13 D. -4x2y + 10xy2 + 7xy + 3