This is the answer and the steps for doing it
Multiply the first equation by -1
-3x-y=-4
2x+y=5
Add them up
-x=1
So x=-1
And y=7
So the first option is correct
780 students prefer chocolate milk.
Step-by-step explanation:
Let,
the total percentage = 100%
Students who prefer plain white milk = 35%
Students who prefer chocolate milk = 100 - 35 = 65%
Number of students = 1200
No. of students who prefer chocolate milk = 65% of total students
No. of students who prefer chocolate milk = 
No. of students who prefer chocolate milk = 
No. of students who prefer chocolate milk = 780
780 students prefer chocolate milk.
Keywords: percentage, subtraction
Learn more about subtraction at:
#LearnwithBrainly
Answer:
$29.25
Step-by-step explanation:
Divide the cost of the turkey by 12 to obtain the unit cost then multiply this by 13
cost =
× 13 = $29.25
Answer: The answer is 88
Step-by-step explanation: It is recursive because you can add 78+10=88