The cost, in cents, to produce x cups of Mountain Thunder Lemonade at Junior's Lemonade Stand is C(x)=18x+240, x0 and the price demand function, in...

The cost, in cents, to produce x cups of Mountain Thunder Lemonade

at Junior's Lemonade Stand is C(x)=18x+240, x≥0 and the price demand function, in cents per cup is, p(x)= 90-3x,0≤x≤30. Find the maximum profit. pls provide solution