The ratio of red to blue to green marbles in a bag is 3 : 10 :4. If there
are 39 red and blue marbles
altogether, how many green marbles
are there?

12 green marbles

Step-by-step explanation:

first we know that there are 39 red and blue marbles, so 3x+10x=39 x=3

since the amount of green marbles is 4x, and we know x=3, x*4=12

option 1

data plot with   3 dots over 33, 1 dot over 34, 2 dots over 35, no dot over 36, 1 dot over 37, 2 dots over 38, 4 dots over 39, and 2 dot over 40.

answer: i believe it is c

step-by-step explanation:

because 5+4=9 so it would be 3^9