Chen has $2.10 in nickels, dimes, and quarters. He has three times as many quarters as dimes and four times as many
nickels as dimes. How many of each coin does Chen have?

The graph of f(x) is obtained by reflecting the graph of f(x)=-3|x| over the x-axis. which equation describes f(x)? a) f(x)=3|x| b) f(x)=|x+3| c) f(x)=-3|x| d) f(x) = - |x+3|