3. Tyler charges his customers a weekly fee plus $5 every time he walks their dogs. One
week, he charged a customer $25 for walking their dog 3 times. Assume the relationship is
linear. Find and interpret the rate of change and initial value.
Plz hel

Your vet has placed your pet on a diet. the diet is to contain at least 12 mg of fat and at least 14 mg of protein per serving. these requirements are to be obtained from two food sources. source a contains 2 mg of fat and 2 mg of protein per serving. source b contains 1 mg of fat and 3 mg of protein per serving. if source a sells for $1.28 per serving and source b sells for $1.12 per serving, how many servings of each type should be purchased to satisfy the requirements at minimal cost?