What is the answer to this answer a b c d

Explanation:

The format is

part/whole = percent/100

the left side has "part" over "whole" as one fraction meaning we divide some small part over a larger number. In this case, we have x as the smaller part and 600 as the total number of messages. The letter x is the placeholder for Connor's amount of messages.

On the right side is 55/100 which turns into 55%. Recall that any percentage is basically that number over 100 since "percent" can be thought of as "per 100" (cent = 100)

i have no clue at all sorry

step-by-step explanation:

x = -3

y = -18

step-by-step explanation:

to solve by substitution, substitute one variable and solve for the other. then substitute again to find the remaining variable.

x-1/3(3x-9) = -3 since y=3x-9 substittute y.

x-1/3(3x-9)=-3

x + x +3 = -3

2x+3=-3

2x+3-3= -3-3

2x=-6

x=-3

substitute again into y=3x-9

y=3(-3)-9

y=-9-9

y=-18