Decide whether the relation is a function.?

A. Function
B. Not a function
Answer: B
Mathematics
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There are 100 children in the kindergarten. What is the percent of girls, if we know that there are 51 girls there? ?
A. 51% B. 0.51% C. 49% D. 0.49% E. none of these
Mathematics
Perform the operation in expanded notation. Write answer in simplified form.57 + 31
A. 88 B. 544 C. 108 D. 98
Mathematics
Solve the problem.Give fraction notation for the amount of gas (a) in the tank and (b) used from a full tank.
A. (a) ; (b)
B. (a) ; (b)
C. (a) ; (b)
D. (a) ; (b)
Mathematics
Factor the trinomial completely.x2y2 + 8xy + 15
A. (xy + 5)(xy - 3) B. (xy - 5)(xy - 3) C. (xy + 5)(xy + 3) D. (x2 + 5)(y2 + 3)
Mathematics