What is the volume of a sample of liquid mercury that has a mass of 76.2g

Aboat's value over time is given as the function f(x) and graphed below. use a(x) = 400(b)x + 0 as the parent function. which graph shows the boat's value increasing at a rate of 25% per year?

An investment decreases in value by 30% in the first year and decreases by 40% in the second year. what is the percent decrease in percentage in the investment after two years

Anyone? 15m is what percent of 60m; 3m; 30m; 1.5 km?