I need help with the problem 44

Use the knowledge of x- and y- intercepts to choose the correct graph of the equation 3x+6y=6

Adepartment store purchases screen-printed t-shirts at a cost of $5 per shirt. they mark up the price 150% (making the selling price 250% of the store's purchase price) and put them on the sales floor. every month that a t-shirt doesn't sell, the store reduces the selling price by 25%.

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