65. Because 6x10=60 and then plus 5 that equals 65
Even number are of the form 2n. The sum of this sequence is the average of the first and last terms times the number of terms.
So the first term is 2 and the 25th term is 50 so the sum is:
(2+50)(25/2)
52*12.5=650
The conjecture they wish you to make is that for n terms, the sum will be:
s=n(n+1)
And for 25 terms that would give you:
s=25*26=650
Answer:
The total number of students that ate lunch are 300 .
Step-by-step explanation:
Formula

As given
There are 4 lunch choices in a school cafeteria: Salad, Pizza, Spaghetti, and Sub Sandwiches.
The percentage of students that chose salad is 15%.
If 45 students chose salad.
Here
Percentage = 15%
Part value = 45
Put in the formula



Therefore the total number of students that ate lunch are 300 .
Absolute value is the distance from a value to zero. In this case, it'd be written as | -282 |. If x = | -282 |, then x = 282