How do you find the derivative of y=tan(arcsin(x))y=tan(arcsin(x)) ?

Im literally having a mental breakdown

What is 1.5% of 120 or what number is 1.5% of 120

The amount cami raised during last year’s charity walk, $45.50, is 7/10 of the amount she raised this year. which equation represents n, the number of dollars she raised this year?