Sophia has a bag with 3 purple marbles and 4 blue marbles in it. She is going to randomly draw a marble from the bag 280 times. putting the marble back in the bag after each draw.

yes

\

step-by-step explanation:

v v cj van config k tbs eng r.c r.c fcb fb gb frfr

answer: a.

step-by-step explanation: the answer is a. because, you need to converge the fractions to find a solution.

x² + 3x + 7 = 0       [ax² + bx + c]

a = 1

b = 3

c = 7

quadratic formula:

    (+/- is this ±)

plug in the numbers into the variables

your answer is a