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marie mixes 16 liters of 18% acid solution with a 27% acid solution to make a 21% acid solution

how many liters of 27% solution did she use?
a ) 8 liters
b ) 12 liters
c ) 13.7 liters
d ) 16 liters

What is the equation of a vertical line passing through the point (−5, −1)? y = −5 y = −1 x = −5 x = −1

Empty box + box + empty box fill in the box is equal to 30 how

Janie has $3. she earns $1.20 for each chore she does and can do fractions of chores. she wants to earn enough money to buy a cd for $13.50. write an inequality to determine the number of chores, c, janie could do to have enough money to buy the cd.