Find the value of x

a: 7
b: -7, 7
c: 49
d: -49, 49

Select all the correct answers. what is 221,000,000,000,000,000,000 expressed in scientific notation?

Abag contains 3 red marbles, 2 blue marbles, and 2 green marbles. one marble is picked, then another marble. assume that the selections are made with replacement. a) find the probability of picking two red marbles with replacement. b) find the probability of picking a red marble and a blue marble. assume the selections are made without replacement. c) find the probability of picking two red marbles without replacement. d) find the probability of picking a red marble and a blue marble without replacement.

What would the rule be for the reflection of y=-3