I need help and I need it fast please help

Translate the word phrase into a math expression. 15 fewer than the product of 4 and a number. (pls immediately)

If you shift the linear parent function, f(x)=x, up 13 units, what is the equation of the new function?

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?