What is the domain of the relation: (0, 7), (8, -1), (2, 3), (-4, 6)?

a. (-4, 0, 2, 8)

b. (-1, 3, 6, 7)

c. (1, 7, 8, -1)

d. (2, 3, -4, 6)

The two-way table shows the number of people whose hobbies are reading or solving puzzles and who either ride a motorcycle or don’t ride a motorcycle. among people whose hobby is reading, what is the relative frequency of not riding a motorcycle? express your answer as a decimal, and round it to the nearest hundredth if necessary. enter your answer in the box. reading solving puzzles ride a motorcycle 7 3 don't ride a motorcycle 5 9

What is the value of x? enter your answer in the box. photo attached.

What is the point of inflection for the function f(x)=2cos4x on the interval (0, pi/2)