Select the correct answer. which relation is a function? a. {(2, 3), (1, 5), (2, 7)} b. {(-1, 5), (-2, 6), (-3, 7)} c. {(11, 9), (11, 5), (9, 3)} d. {(3, 8), (0, 8), (3, -2)}

Choice B represents a function

Step-by-step explanation:

For a relation to be a function, each x input should yield exactly one y output. Going by this definition, the relation given by alternative A is not a function since the x input 2 yields two different values of y. For alternative C, 11 yields 9 and 5 as the outputs hence contradicting the definition of a function. For alternative D, the value 3 yields two different y values.

the equation cos(35) =a/25 can be used to find the length of bc what is the length of bc? round to the nearest tenth

step-by-step explanation:

x = 23.78

step-by-step explanation: