The table shows the linear relationship between the average height in feet of trees on a tree farm and the number of years since the trees were planted.

Based on the table, which function represents this situation?

Number of years since the trees were planted:1,3,6,11,15
average height (ft):10,24,45,80,108
"f" left parenthesis, "x" , right parenthesis equals 3 "x" plus 7
f

x

=3x+7

"f" left parenthesis, "x" , right parenthesis equals negative 7 "x" minus 3
f

x

=−7x−3

"f" left parenthesis, "x" , right parenthesis equals negative 3 "x"
f

x

 =−3x

"f" left parenthesis, "x" , right parenthesis equals 7 "x" plus 3
f

x

=7x+3

The function that represents this situation is:

f(x) = 3x + 7