Multiply the cost per mile by number of miles “m” and add that amount to the $50:
Total = 3m + 50
R-7=7 add the seven from both sides, leaving the r alone, because this is what you are trying to find. Thus the answer is r=14.
ANSWER

EXPLANATION
From the Pascal's triangle,
The coefficients are :
1, 5, 10,10, 5,1
Because of the negative sign, the expansion will alternate sign.

We now put y=5 into the expansion to get,


Answer:
(0,2)
Step-by-step explanation: