the top of a ladder is leaning on a building at a point 12 feet above the ground; the bottom of the ladder is 10 feet from the base of the building. What is the length of the ladder?​

I’m stuck on this i don’t understand.

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.

How many real-number solutions does the equation have? -4x^2 + 10x + 6 = 0 a. no solutions b. two solutions c. infinitely many solutions d. one solution