Last one, I promise. And I will give you 10 points, no exceptions. Only answer if you truly know it. Any off topic answers will be reported.

x = 33 degrees

Step-by-step explanation:

Angle ABC = BDA because they are alternate interior angles.

So:

Angle BDA = 42 degrees

x = 180 - 105 - 42

x = 33 degrees

b. 1.25 hr

step-by-step explanation:

if you have a constant speed of 60 mph, then you have a ratio between 60 mi. to 1 hr. dividing both sides by 60 we get the ratio

1 mi. to

then mult. both sides by 75 we get the ratio

75 mi. to

simplifying we get

75 mi. to

or 1.25 hr.