The price of an iphone was reduced from $960 to $840. By what percentage was the price of the iphone reduced? A. 13.5%
B. 12.2%
C. 13%
D. 12%

Plz me plz i will give a brain just plz

You are making a battery for a science project. you have copper wire for your first electrode. you need to choose a conductor, a second electrode, and a device to plug into your battery. you have already chosen a lemon conductor. complete each statement below about the options that include a lemon conductor.

Find the roots of the polynomial function f(x) = x^3 + 2x^2 + x