Find the solution of the quadratic equation by graphing

Enter the amplitude of the function. f(x)=3cosx

Alarge cheese pizza costs $18. each topping you add on costs $1.50. how much would it cost to get a large cheese pizza with cc toppings added? write your answer as an expression

For questions 1–3, use the differential equation given by dx equals x times y divided by 3, y > 0.