1. The monthly revenue, R(x), for a big tech company depends on the monthly advertising expenses, x, by the function R(x) = 1020x 25+ax : where the monthly revenue and advertising expenses are in thousands of dollars. (a) What should be the monthly advertising expenses if the company wants the monthly revenue (in $) to exceed $200 000? Include an interval chart in your solution. (3 marks) (b) What will happen to the amount of monthly revenue as advertising expenses increase? Provide a complete answer by providing details about the behaviour of the graph and numerical details about the monthly revenue. Include a sketch. (2 marks)