Which of the following expressions is undefined?

A. 3•45 + 0

B. 85/42+30

C. 42/6-7

D. 56 / (7-7)

A nurse visit 5 homes each day. If she gets $2 for each visit, how many days will it take her to earn $30

can you show me the work for (-9) exponent 4

If A=19 what is 4a-b+2a?

How many times does 12 go into 44

Is 25/176 a repeating or terminating decimal

dean pours 3 gallons of paint equally into 5 cans. how many gallons of paint will there be in each can

Suppose N coins lie heads up on a table. In one turn, you can turn over any (N-1) coins. Is it possible that N coins could lay tails up in any number of turns, if a N=15?

Mikayla asked 10 of her friends how many hours of TV they watch in a week. Three of her friends said 8 hours, two of her friends said 9 hours, two of her friends said 11 hours, one of her friends said 12 hours, and two of her friends said 14 hours.

In 2015, the population of a small town in florida is 95. of the population increases 15% per year, approximately what will the population be in 2023

A total of 4 buses carrying 148 students from the same school arrive at a football stadium. The buses carry, respectively, 40, 33, 25, and 50 students. One of the students is randomly selected.