Travis and paula went to lunch. travis ordered a sandwich for $7.50, and paula ordered a burger for $5.25. after lunch, they left a 15% tip for their waiter. how much money did they spend altogether?

What is the square root of 45? (step by step working plz)

The classrooms are trying to raise $1,200.00 for charity. mrs. leblanc's class has raised 50%. mr. patel's class has raised $235.14 ms. warner's class has raised 1/3 as much as mrs. leblanc's class. how much more money is needed to reach the goal of $1,200.00?

How do i do this? i don’t understand