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The vet charges $45 for an office visit and $10 for each vaccination your dog needs. write an eaquation

The linear combination method is applied to a system of equations as shown. 4(.25x + .5y = 3.75) → x + 2y = 15 (4x – 8y = 12) → x – 2y = 3 2x = 18 what is the solution of the system of equations? (1,2) (3,9) (5,5) (9,3)

Two variables, x and y, vary inversely, and x=12 when y=4. what is the value of y when x=3?