Describe the situation with a linear inequality and then solve the inequality.Lauren earns $2 an hour selling encyclopedias door-to-door. She also earns $28 in commission per set of encyclopedias sold. To pay her rent this week, she must earn at least $130, and she only has time to work 9 hours. How many sets of encyclopedias must Lauren sell this week in order to make her rent?
A. She would have to sell at least 3 sets of encyclopedias.
B. She would have to sell at least 4 sets of encyclopedias.
C. She would have to sell at least 6 sets of encyclopedias.
D. She would have to sell at least 5 sets of encyclopedias.
Answer: B
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Solve the problem.Bob and Fred play the following game. Bob rolls a single die. If an even number results, Bob must pay Fred the number of dollars indicated by the number rolled. On the other hand, if an odd number is rolled, Fred must pay Bob the number of dollars indicated by the number rolled. Find Bob's expectation.
A. $0.40 B. -$0.25 C. $0.00 D. -$0.50
Find the exact value of the expression.sin 20° cos 100° + cos 20° sin 100°
A. 
B. 
C. - 
D. - 
Add.
+ 927 + 9011
A. 9967
B. 
C. 9909
D. 
Find the quotient and the remainder.3x3 + 4x2 + 2x + 12 divided by x + 2
A. x2 + 3x + 4; remainder 0 B. 3x2 + 2x + 6; remainder 0 C. 3x2 - 2x + 6; remainder 0 D. x2 + 2x + 3; remainder 0