1. (8x)/(7y) Letter C
2. let x = apples; let y = oranges;
x + y = 12
x = 2y
2y + y = 12
3y = 12
y = 4
oranges = 4
apples = 2* 4 = 8
3. B all real numbers
4. I did this already
5. t + h = 39
t = 2h
2h + h = 39
3h = 39
h = 13
2h = 26 LETTER D
6. Letter B
Any number that is irrational, such as
0.4 + pi because pi is an irrational number.
Okay, so if it leaks out a pint every hour, and a gallon is 8 pints, it will take 8 hours to leak out 1 gallon. Since there are 24 hours in a day, it would leak out 3 gallons every day. Now, assuming the month we are talking about is 31 days, then we multiply 31 with 3, giving us 93 gallons in a month.
Do you need help with the third too?