Is this sampling method valid ?if so how many of the 750 students of various high schools are likely to participate in this program

The inside wheels of a car traveling on a circular path are rotating half as fast as the outside wheels. the front two wheels are six feet apart. what is the number of feet in the path traced by the inside front wheel in one trip around the circle? express your answer in the form "k \pi", where k is an integer.

Evaluate the expression for the given value of the variable. 5×(h+3) for h=7

The zoo collects $9.60 for every 24 tickets sold. how much will be collected for 400 tickets?