Free points+5 stars+thanks(must answer the question) DO u see abs also wanna know how I got these?

Serena is making an experiment. for that, she needs 20 grams of a 52% solution of salt. she has two large bottles of salt water: one with 40% and the other with 70% of salt in them. how much of each must she use to make the solution she needs? i am in need of

Which of the following graphs could represent a quartic function?

Type the correct answer in the box. use numerals instead of words. if necessary, use / for the fraction bar.