HELP PLEASE!! 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. Select the
equation and solution to find the number of miles m for which
Tonya and Beth would charge the same amount.
8m = 20
20 + 3m = 5m
m=2.5
20 +3m +5m = 0
m = 12
Om = 10

ratio is 2 : 9

the answer is three

13.5 : 3

step-by-step explanation:

to determine whether a given function is even, we simply substitute x with -x in the expression. if the result after simplification is identical to the original equation, then the function is said to be even other wise odd.

f(-x) = (-x)^2 - (-x) + 8

      = x^2 + x +8

the resulting function is not identical to the original one;

f(-x) ≠ f(x)

therefore, f(x) is not an even function