[5 marks] An amusement park determined that if it sells fulldayr ride passes for :3 dollars and halfday.r passes for y dollars then consumers will buy m{$, y} = l - 503 + 40y fullday passes and nfm, y} = 20 + We my halfdag.r passes. The revenue, in dollars, generated by these sales is then R[:r., y) = omfz, y} + wz, y}. (a) What revenue will be generated if the park sells fulldag,r ride passes for 9655I and halfday passes for $35.51]? (in) Determine 1231:4934). What 1would you say.r if the cost of a full day pass was raised to $55