The cost of renting a popcorn machine is 8$ per hour plus 30$ for supplies. write a algabraic expression for renting the machine x hours

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?

What is sin 7x/4 ? i need on this urgent trig

Use the graph of the sine function y=2sinθ shown below