After 2 miles, the cost will be same for both companies.
Step-by-step explanation:
Charges of Cabs'R Us = $4.00
Per miles charges = $3.00
Let,
x be the number of miles.
R(x) = 3x+4.00
Charges of Call A Cab = $2.00
Per mile charges = $4.00
A(x) = 4x+2.00
For same amount;
R(x) = A(x)

After 2 miles, the cost will be same for both companies.
Keywords: function, subtraction
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