Tree pruning company A charges a one-time $85 equipment fee and charges $60 for each tree that it prunes. Tree pruning company B charges a one-time $65 equipment fee and charges $70 for each tree that it prunes.
Let the variable t represent the number of trees pruned and let the variable c represent the cost.
For how many pruned trees will the cost be the same for both companies?
Which system of equations can be used to solve this problem?
A. c=85+60tc=65+70t
B. c=85t+60c=65t+70
C. c=145tc=135t
D. c=85−60tc=65−70t
