7. the students in ms. chang's class decide to
order water bottles that advertise the walkathon.
maliik obtains two different quotes for the costs
of the bottles.
fill it up charges $4 per bottle.
bottles by bob charges $25 plus $3 per bottle.
a. for each company, write an equation maliik co
use to calculate the cost for any number
of bottles.
b. on the same set of axes, graph both equations from part a. which variable is the independent variable? dependent?