What is the Answer pls help

The value √10 and √15 are plotted on the number line

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

Suppose a laboratory has a 30 g sample of polonium-210. the half-life of polonium-210 is about 138 days how many half-lives of polonium-210 occur in 1104 days? how much polonium is in the sample 1104 days later? 9; 0.06 g 8; 0.12 g 8; 2,070 g