Answer:
f(x) = 2x² +13x -7
Step-by-step explanation:
Given a root r, a factor of the expression with that root is (x -r). For your roots, the factors of a suitable polynomial are ...
(x -1/2)(x +7)
Since you don't want any fractions, you can multiply this by 2:
(2x -1)(x +7)
And you can eliminate parentheses and write it as a function.
f(x) = (2x)(x +7) -1(x +7) = 2x² +14x -x -7
f(x) = 2x² +13x -7
1 x 7 = 7
2 x 7 = 14
3 x 7 = 21
4 x 7 = 28
5 x 7 = 35
7,14,21,28,35
I hope that's help !
80 is the total number of students
Total cost: $10/student x 80 = $800
$960 x 2 = $1,920
In order to get the total cost per student, we need to get the sum of the cost of the food and bus rental. So 800 + 1,920 would be $2,720.
Now, divide the sum by 80 (number of students) and the result is 34. So the total cost per student is $34.
Answer:
The question is not asked correctly
Step-by-step explanation:
