The variable of interest would be whether or not their eyes were affected.
Variables of interest are like independent variables, they are the variable that you are testing for change.
Distribute first. 4 times 3x is 12x and 4 times -5 is -20
12x-20+2x=8 now combine your like terms.
14x-20=8 and add 20 to each side
14x=28 divide
x=2
5.23347633e26 5 would be the one's place
Answer:
1601000000
Step-by-step explanation:
You do the parentheses first.
10 to the 6th power is 1000000. Then, multiply that nuber by 2 to get 2000000.
Then, multiply 2000000 by 800.5 to get
1601000000