List the elements of the sample space for the following experiment.
A month is selected from the months that have exactly 31 days.
?
a. February
b. January, March, April, May, June, July, August, September, October, November, December
c. January, March, May, July, August, October, December
d. April, June, September, November
e. January, March, May, July, August, October
c. January, March, May, July, August, October, December
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Draw the angle having the given radian measure.- 
A. 
B. 
Simplify. Write your answer in the form a + bi, where a and b are real numbers.(7 - 3i) + (1 + 6i)
A. -8 - 3i B. 8 - 3i C. -8 + 3i D. 8 + 3i
Solve the problem.In a sale, the price of a computer is reduced by $150. The sale price is $1470. Find the marked price (original price) and the rate of discount. Round the discount rate to the nearest tenth of a percent if necessary.
A. $1320; 10.2% B. $1620; 9.3% C. $1320; 11.4% D. $1620; 10.2%
Solve the problem.Mieko, who is 1.55 m tall, wishes to find the height of a tree. She walks 19.83 m from the base of the tree along the shadow of the tree until her head is in a position where the tip of her shadow exactly overlaps the end of the tree top's shadow. She is now 6.26 m from the end of the shadows. How tall is the tree? Round to the nearest hundredth.
A. 2.27 m B. 0.49 m C. 4.91 m D. 6.46 m