Solve the problem. Express the answer in scientific notation to two decimals.A light-year is the distance that light travels in one year. Find the number of miles in a light-year if light travels 1.86 × 105 miles/second.
A. 6.0 × 105 mi
B. 6.0 × 107 mi
C. 6.0 × 1014 mi
D. 6.0 × 1012 mi
Answer: D
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Choose a variable to represent one quantity. State what that quantity represents and then express the second quantity in terms of the first.A 54-centimeter piece of rope is cut into two pieces.
A. first piece: z cm; second piece: 54 - 2z cm B. first piece: z cm; second piece: z - 54 cm C. first piece: z cm; second piece: z + 54 cm D. first piece: z cm; second piece: 54 - z cm
Perform the indicated operation and simplify. 
- 
A. 
B. 
C. 
D. 
Use the formula A = P(1 + rt) to find the indicated quantity.Allan borrowed $5500 from his father to buy a car. He repaid him after 8 months with interest of 7% per year. Find the total amount he repaid.
A. $5724.58 B. $5885.00 C. $256.67 D. $5756.67
Evaluate the integral.
A. 
B. 
C. 21
D. 