Answer:
Explanation:
Lets work out the equation for the given relationship.
This is a linear relationship.
Find the slope first:
- (21.75 - 19.50)/(3 - 2) = 2.25
Use one pair of points to get the equation:
- c - 19.50 = 2.25(m - 2)
- c - 19.50 = 2.25m - 4.50
- c = 2.25m + 15
We see the yearly fee is $15 and monthly rate is $2.25.
If we apply the changes to rates the equation becomes:
- c = (2.25*2)m + (15 - 5) = 4.5m + 10
Find the cost of 11 months of membership: