Max spent $53 and now has no money left. He had $__ before his purchase

Can u guys do this ratio question. this is extremely urgent a tap is leaking water at a rage of 1l every 8 hours. how long will it take for the tap to leak a total of 300ml?

The equation x2 – 1x – 90 = 0 has solutions {a, b}. what is a + b?

In which direction does the left side of the graph of this function point? f(x) = 3x3 - x2 + 4x - 2