At healthy hair, the cost of a child's
haircut is $4 and the cost of an adult
haircut is $14. the sales from the 42
haircuts given on friday were $588. how
many adults and children had haircuts on
friday? the answer is the solution to the
following system.
4c+14a = $588
tota=42
a. which method will you use to solve
this system: graphing, substitution, or
elimination? explain why.

http://www.elginschools.org/userfiles/179/Classes/7004//userfiles/179/my%20files/module%2011%20review%20key.pdf?id=11326

Step-by-step explanation:

Go There i put the key online with explanation

correct choice is b

step-by-step explanation:

when you calculate the average rate of change of a function, you are finding the slope of the secant line between the two points. for the function the average rate of change from point to point can be calculated as

to find the average rate of change from day 2 to day 10, note that at day 2, 8 houses were sold, so a(2,8) and at day 10, 2 houses were sold, so b(10,2). thus,

step-by-step explanation: