PLEASE HELP! Evaluate the left hand side to find the value of aa in the equation in simplest form.

The depth of a lake at a certain point, wich is a function of the distance of that point from shore, is 30 feet.

Dylan and dusty plan to take weekly surfing lessons together. if the 2-hour lessons are $20 per person and they plan to spend $100 each on new surfboards, what is the maximum number of lessons the two can take if the total amount spent for lessons and surfboards is at most $480?

Identify the graph of y = ln x + 1.