Integers or decimals only. If a decimal. round to 1 decimal place Find the length of AC for rectangle ABCD

What is the maximum total area that 450cm of string can enclose if it is used to form perimeters of two adjoining rectangles as shown?

Omar is going on a road trip! the car rental company offers him two types of cars. each car has a fixed price, but he also needs to consider the cost of fuel. the first car costs $90 to rent, and because of its fuel consumption rate, there's an additional cost of s0.50 per kilometer driven.

For what value of (y) is 3^3/3^y =1/9