*need asap*

the equation x^2 + y^2 - 2x + 7y + 1 = 0
can be rewritten as which of the following equations?

a. (x - 1)^2 + (y - 7/2)^2 = (7/2)^2
b. (x + 1)^2 + (y + 7/2)^2 = (7/2)^2
c. (x + 1)^2 + (y + 7)^2 = 7^2
d. (x - 1)^2 + (y - 7)^2 = 7^2

The number if marbles of different colors stored in a hat is listed below: 4 red marbles 10 green marbles 7 blue marbles. without looking in the hat, dan takes out a marble at random. he replaces the marble and then takes out another marble from the hat. what is the probability that dan takes out a blue marble in both draws?

80 points suppose marcy made 45 posts online. if 23 of them contained an image, what percent of her posts had images? round your answer to the nearest whole percent. 54 percent 51 percent 49 percent 48 percent

Which of the following exponential functions goes through the points (1, 6) and (2, 12)? f(x) = 3(2)x f(x) = 2(3)x f(x) = 3(2)−x f(x) = 2(3)−x