Question

@triciaal

Answer 1

angles on a straight line add up to 180

Answer 2

yes

Answer 3

how do i solve for k?

Answer 4

put like terms together
isolate the variable to one side of the equation and the numbers to the other
whatever you do to one side also do to the other to keep the balance
divide each side by the coefficient of the variable to get one time the variable.
in this problem the variable is k