Find the measure of the exterior angle.

The sum of all interior angles must be 180, we know that angle t increases by 10 therefore t is equal to 50° and angle t + 20° is equal to 70°

next we can see that the two angles form a 180° angle meaning the measure of the exterior angle is 180° - 70° or 110°

107.5 miles

Step-by-step explanation:

We can use the formula d = rt (distance = rate · time) to find the distance travelled.

We know that,

r = 43 mph

t = 2.5 hrs

Plug these values into the formula to get your answer.

43 · 2.5 = 107.5 miles