Tonya's dog-walking service charges a flat rate of $20 per month, plus $3 per mile that each dog is walked. Beth does not charge a monthly fee for her dog-walking service, but she charges $5 per mile that each dog is walked. Part A Choose the equation that can be used to find the number of miles m for which Tonya and Beth would charge the same amount. O A. 20 + 3m = 5m O B. 20 = 3m + 5m O C. 20 + 5m = 3m O D. 20 + m = 8m Part B m = miles

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Equations and Inequations

Equations and inequalities describe the relationship between two mathematical expressions.

Linear Functions

A linear function can just be a constant, or it can be the constant multiplied with the variable like x or y. If the variables are of the form, x2, x1/2 or y2 it is not linear. The exponent over the variables should always be 1.