Suppose a laboratory has 26g sample of polonium-210. the half life of polonium is about 138 days. how many half lives of polonium 210 occur in 276 days? how much polonium is is in the sample 276 days later?

John bought 5 lemons and used 2 of them for a salad how much did he use for.a salad . he used % of the lemons.

Select the correct answer from the drop-down menu. subtracting 3xy^2 from 8xy^2 gives the same result as the expression. [tex]3xy ^{2} - 8xy ^{2} [/tex][tex] { - 7xy}^{2} - {2xy}^{2} [/tex][tex] {7xy}^{2} - {2xy}^{2} [/tex]

Which of the following graphs could represent a quartic function?