Due to the u-shaped graph suggested by these data points, this would best be matched with a quadratic function.
148 is the answer because
8,120+64,100=72,220
72,220 divide by 488 = 147.991803
rounded is 148
1. The total must be at least $1975:

2. Dog walks is no more than 4 times lawns:

3. At least 50 dog walks:
Answer:
a) Total cost = 49 + 38.75m
b) Total cost = 149 + 38.75m
c) The graphs of the lines are parallel and both has slope of - 2.5
d)Difference in total cost = $132.5
Step-by-step explanation:
Total cost , TC = Initial membership fee + monthly charges
a) TC = 49 + 38.75m
b)TC = 149 + 38.75m
d) 149 + 38.75(6months) = 381.5
49 + 38.75(12months) = 514
Difference in total cost = 514 -381.5 = $132.5