M∠CBT is not 120°.
You have to notice the start of the measure of the angle is on the point of C. It is the 0°.
If the segment BT is straight up from the point of B, its angle will be 90°.
Since the segment does not form a right angle, its measure of angle is less than 90° but more than 0°
Use the proportion inches per miles.
.5 in / 2 miles = 2.75 in / d miles
Hope this helps :)
Answer:

Step-by-step explanation:
we know that
The linear equation in slope intercept form is equal to

where
m is the slope or unit rate of the linear equation
b is the y-intercept or initial value
In this problem we have
The slope is equal to

The y-intercept is equal to

so
substitute the given values
