Write a system of equations to describe the situation below, solve
using any method, and fill in the
blanks.
In a paint factory, an old conveyer
line has filled 32 barrels of paint,
and is filling more at a rate of 7
barrels per minute. A worker just
switched on a newer line that can fill
9 barrels per minute. In a little
while, the two lines will have filled
an equal number of barrels. How
long will that take? How many
barrels will each line have filled?

Please help due in 30 minutes!!

Aretha wanted to gather data about the cost of local bowling leagues in her area. she plotted the data and determined that the average bowling league costs consist of a one-time registration fee and a monthly fee modeled by the equation y = 15x + 20. identify and interpret the y-intercept in this model. the y-intercept is 20. this is the cost per month. the y-intercept is 20. this is the cost of registration. the y-intercept is 15. this is the cost of registration. the y-intercept is 15. this is the cost per month.

Math i have no idea how to do a and b

Kerion has a beaded necklace business. she can make 12 necklaces is 2 hours. how long will it take her to make 9 necklaces?