You have a 1/3 chance each time you role
So 1/3 x 12 = 4 times that you would role a 5 or a 6
Do (4^9)^5 first, when an exponent is in a parenthesis with another exponent outside, you multiply them which makes 4^45. Then we multiply 4^0 but this time we add the exponent because there’s no parentheses, which gives you 4^45.
The expression is (15+6) */* 3. This is because we add up all the costs to get the total, and divide the total by three because there are three friends splitting the cost.
I hope this helps you
x>4
x>-4
x>4
D and E because they are both colder than -10