John invested in the Apple Product stock at an annual interest rate of 7%. He earned $581.00 of simple interest in one year. How much
money did John originally invest in his stock?

Peaches cost $4.29 per pound. find the cost of two and a quarter pounds of peaches.

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.

Which of the following is true for the relation f(x)=2x^2+1