Did I understand correctly, the first number is:

?
in other words, this would be:

and if you drink half of it, then we divide this number by 2:

because 30/2=15
so you would have

still more than a daily dose!
2x - 5 < 7
2x = 12
x = 6
4x + 10 > 6
4x = - 4
x = - 1
( - 1 , 6 )
i am a mathematics teacher. if anything to ask please pm me
It’s D)115 because every straight line has to be 180
Step-by-step explanation:
1. 3(p-q)
2. 4(2m+3n+4r)
3. 2x(2x-3y)
Step-by-step explanation:
area of a circle is r x r x pi
so one quarter of it us r x r x pi /4