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Will give braisnlt

option C. (5,7)

Step-by-step explanation:

first, in order to find X, simply divide that equation by 3 in order to get X by itself.

3x/3 = 15/3

x = 5

then, i just substituted the value of X, 5, into the equation on the top. this is how we find Y.

6(5) - 2y = 16

30 - 2y = 16

at this point, we divide by 2 in order to get Y by itself.

30/2 - 2y/2 = 16/2

15 - y = 8

then, we subtract 15 from both sides of the equation so that the variable, Y, is by itself completely.

-y = -7

finally, since both are negatives, we can cancel out the negative sign and ake the whole equation positive.

x = 5, y = 7

so, in conclusion, the answer is C. (5,7)

12

step-by-step explanation:

a triangle's   full angle is 180 degrees so 180 - 156 = 24. 24/2=12

answer: 80,000

step-by-step explanation:

the population doubles every day.

10,000*2=20,000 day 4

20,000*2=40,000 day 5

40,000*2=80,000 day 6