The best fit line for Mass (g) versus Volume (mL) calibration curve was determined to be y = 1.44x. Calculate the mass of a 2.21 mL sample of an unknown solution. Provide your answer to two places after the decimal. (please provide a step by step explanation)

The independent variable is the type of music.the dependent variable is the pulse rate.the intervening variable is the age of the subject.if the mother does not like rock, her pulse is likely to not increase.the same might be true for the sister.the friend may like rap and gets excited.to establish cause/effect relationship, all of the subjects must be consistent.hope i .

Answers are 1,2,4 its correct on edgenuity.