Use the informal method to determine the rate of change for the data in each table. the rate of
• change is constant for the data in each table. write the rate as a unit rate.
number of
balloons
total cost
of balloons
(in dollars)
number of
lawns
total earned
(in dollars)
25.50
42.50
59.50
76.50

combine all like terms then its just a 2 step equation

step-by-step explanation:

we have

using a graphing tool

see the attached figure

this is a quadratic equation (vertical parabola) open up

the vertex is a > vertex

the domain of the function is all real > interval (-∞,∞)

the range of the function is the > [-6.125,∞)

the function has two x->   and

the function is increasing over the > (0.25,∞)

the function is decreasing over the > (-∞,0.25)