Acircle is centered at its origin, the radius is 7, what is the equation

How many zeros does the function f(x)=4x3-x2+1 have

Jayne is studying urban planning and finds that her town is decreasing in population by 3% each year. the population of her town is changing by a constant rate.true or false?

Apackage of five erasers cost 0. $.39 at this rate how many how much would 60 erasers cost in dollars and cents