Determine whether the set is finite or infinite.The letters needed to spell the following words: tear, rate, rat, tea
A. Finite
B. Infinite
Answer: A
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Determine by matrix multiplication whether or not A is the proper matrix of solution values.
A = 
A. Yes B. No
Translate the statement into a mathematical equation.20 minus twice a number is 5 more than the number.
A. 20 - 2x = 5 + x B. 20x - 2x = x - 5 C. 20 - 2x = 5 + 2x D. 20 - 2 = 5 + x
Find a formula for the inverse of the function described below.A size-52 dress in Country C is size 10 in Country D. A function that converts dress sizes in Country C to those in Country D is 
A. f-1(x) = x + 16 B. f-1(x) = 2(x - 16) C. f-1(x) = 2x - 32 D. f-1(x) = 2x + 32
Solve the problem.A cabin cruiser travels 20 miles in the same time that a power boat travels 40 miles. The cruiser travels 5 mph slower than the power boat. Find the speed of each boat.
A. Power boat: 10 mph; cabin cruiser: 5 mph B. Power boat: 20 mph; cabin cruiser: 15 mph C. Power boat: 15 mph; cabin cruiser: 10 mph D. Cannot be determined without more information