I NEED HELP PLSS PLS

Use the multiplier method to incrases £258 by 43%

Which of the following graphs represents the function f(x) = 2^x

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.