Find the modulus of the complex number.2i
A. -2
B. 2
C. 2i
D. 4
Answer: B
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Solve the problem.On the April 25 billing date, Malcolm had a balance due of $1516.06 on his credit card. The transactions during the following month were: 
The interest rate on the card is 1.4% per month. Using the average daily balance method, find the balance due on May 25 (April has 30 days).
A. $2205.25 B. $1542.91 C. $2204.54 D. $2198.91
Simplify the expression. Write the answer using positive exponents.
A. x16y
B. - 
C. x16y2
D. - 
Solve the problem.A sailboat leaves port on a bearing of S72°W. After sailing for two hours at 12 knots, the boat turns 90° toward the south. After sailing for three hours at 9 knots on this course, what is the bearing to the ship from port? Round your answer to the nearest 0.1°.
A. N23.6°E B. N24.6°E C. S24.6°W D. S23.6°W
Multiply the polynomials using the FOIL method. Express the answer as a single polynomial in standard form.(3x - 8)(x + 10)
A. x2 + 22x + 21 B. 3x2 + 22x - 80 C. x2 - 80x + 22 D. 3x2 + 21x - 80