Question

Help in attachment, multiple choice

Answer 1

Let the cost of land for student 1 be x

Student 1's total cost of mining is
x + 2 + 5(2) = x + 12

Student 2's total cost of mining is
4 + 5 + 6(2) - 4 + 5 + 12 = 21

21 = x + 12 + 3

21 = x + 15

x = 6

Answer 2

I got 9?

Answer 3

answer is 9?

Answer 4

I have no clue. cause this how I got it:

x + 2 + 5(2) = x + 12

21 = 12 + x
-12 -12

x = 9

Answer 5

It says Student 2's total cost of mining is $3 more than student 1.

Answer 6

Yeah but the total of student 2 is 21.

Answer 7

yea