Kim bought sandwiches for the football team. each sandwich cost 3.49$. she paid $142.39, including $2.79 tax. how many sandwiches did she buy?

the sum of all the angles in a triangle are equal to 180

so you can add   the 3 given angles together to equal 180:

5y + 2y + 2y = 180

or since all three angles have the same letter, combine the 3 angles to equal 180:

9y = 180

b.-4 units

all you   do is count how many times you move