What is the highest number known to man

When eating out, record the total cost of your meal (before tip) and the tip that you left. determine the percent of the cost of the meal that you left as a tip.

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

Which exponential function has an initial value of 2? f(x) = 2(3x) f(x) = 3(2x)