Help me please there 5 question and I really need help with this

Find the value of the cosine for angle a

The local farm is advertising a special on fresh picked peaches. the farm charges $4.25 to pick your own peck of peaches and $3.50 for each additional peck you pick. write an equation for the total cost of peaches in terms of the number of pecks. deine your variables. how much does it cost to pick 3 pecks of peaches?

Find the zero function by factoring (try to show work) h(x)=-x^2-6x-9