For which type of mathematics problem is the "odometer strategy" commonly used by students?
a. Fundamental Counting Principle problems
b. Fundamental Theorem of Arithmetic problems
c. Vector addition problems
d. Matrix multiplication problems
Ans: a
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Solve the system by substitution. If the system is inconsistent or dependent, say so.
A. (-7, 0) B. (1, 6) C. (0, 7) D. empty set solution; inconsistent system
Solve using a system of linear equations in three variables.The Family Arts Center charges $23 for adults, $18 for senior citizens, and $5 for children under 12 for their live performances on Sunday afternoon. This past Sunday, the paid revenue was 
for 738 tickets sold. There were 48 more children than adults. How many children attended?
A. 219 children B. 257 children C. 252 children D. 393 children
Find the expected value.A car agency has found daily demand to be as shown in the table.
Find the expected number of customers.
A. 9 B. 12 C. 10 D. 2
Solve the equation.
= 
A. 1 B. 2 C. -2 D. -1