Hannah has $400 in $5 bills and $20 bills. If she has 38 bills total, how many of them are twenties?

Use the function f(x) is graphed below. the graph of the function to find, f(6). -2 -1 1 2

How to solve a simultaneous equation involved with fractions?

Write an equation of the line that passes through the point (2, 3) and is perpendicular to the line x = -1. a) y = 1 b) y = 3 c) y = 0 eliminate d) y = -3