Which study is a survey? a. watching the construction of two buildings in your neighborhood and noting which one gets completed first b. making a group of people read with red or green lighting to see which one they read faster with c. taking a group of children to an ice-cream parlor and giving them new flavors of ice cream to see how quickly they eat their treats d. asking a group of randomly selected employees how happy they are with the new employee policy

In the triangle rst, rs = 65 and st = 60. which equation could be used to find the value of angle s?

The graph of the function f(x) = (x + 2)(x + 6) is shown below. which statement about the function is true? the function is positive for all real values of x where x > –4. the function is negative for all real values of x where –6 < x < –2. the function is positive for all real values of x where x < –6 or x > –3. the function is negative for all real values of x where x < –2.

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?