Solve the problem.Doreen and Irena plan to leave their houses at the same time, roller blade towards each other, and meet for lunch after 2 hours on the road. Doreen can maintain a speed of 3.6 miles per hour, which is 40% of Irena's speed. If they meet exactly as planned, what is the distance between their houses?
A. 18 miles
B. 10.08 miles
C. 7.2 miles
D. 25.2 miles
Answer: D
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Find the least common multiple (LCM) of the pair of numbers.28 and 40
A. 280 B. 68 C. 4 D. 1120
Solve the problem.A vendor sells hot dogs, bags of potato chips, and soft drinks. A customer buys 2 hot dogs, 5 bags of potato chips, and 2 soft drinks for $10.75. The price of a hot dog is $1.25 more than the price of a bag of potato chips. The cost of a soft drink is $2.50 less than the price of two hot dogs. Find the cost of each item.
A. $2.00 for a hot dog; $0.75 for a bag of potato chips; $1.50 for a soft drink B. $0.75 for a hot dog; $2.00 for a bag of potato chips; $1.50 for a soft drink C. $2.25 for a hot dog; $1.00 for a bag of potato chips; $1.50 for a soft drink D. $2.00 for a hot dog; $1.50 for a bag of potato chips; $0.75 for a soft drink
Solve for x and graph the solution.x + 4 < -6
A. x ? -10 
B. x < -10
C. x ? -10
D. x > -10 
Solve the equation.e6x - 1 = (e4)-x
A. 
B. 
C. 
D. {0}