Solve equation using square roots (x-1)^2=4

X is equal 3. to do this, you do reverse of order of operations. So this means that you would to the 'times 2' first by dividing 4 by 2 to make it 2. then, in the parenthesis, since there is a 'minus 1', therefore you are going to add 1+2 which equals three.  

To find out how much Sandar paid for the chips, multiply 4 by 2.99 and subtract that by 2. 

The answer to that would be $9.96.