Answer:
7 ordered with Soda;
3 ordered with water
Step-by-step explanation:
Given
With water
With Soda
So:
--- total
-- cost
Required
Find m and n

Make m the subject

Substitute
in 


Collect like terms



Solve for n





Answer:
3.1 inches
Step-by-step explanation:
Area of the cookie =Pi r^2
Pi = 3.14
Diameter = 2inches
Radius r = diameter/2 = 2/2
= 1
Therefore
Area = 3.14 x 1^2
= 3.14 x 1 x 1
= 3.1 inches
3x+17=2x+23
5x=40
40/5=8
x=8