Anybody good in math and wanna help me with #1 and #2?

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

High schoolmathematics 5 points keith is the leading goal scorer for a team in an ice hockey league. last season, he scored 42 goals in 82 games. assuming he scores goals at a constant rate, what is the slope of the line that represents this relationship if the number of games is along the x-axis and the number of goals is along the y-axis?

If jaime wants to find 60% of 320, which table should he use?