What number is between 2 and 7 is less than 100 but larger than 50 the product of three different prime numbers?

The circumference of a circle is 5 pi cm. what is the area of the circle?

Aline has a slope of 1/4 and passes through point (0.4,-1/2). what is the value of the y-intercept?

Satchi found a used bookstore that sells pre-owned dvds and cds. dvds cost $9 each, and cds cost $7 each. satchi can spend no more than $45.