Answer:
and 
Step-by-step explanation:
Given

Required
Determine the values of x

Take square root of both sides


Expand 45 as 9 * 5

Split the square root



This can be further split to:
or 
Hence, the possible values of x are
and 
<u>Answer:</u>
- Both will be at equal distance at 8 miles in 2 hours.
<u>Step-by-step explanation:</u>
<u>We know that:</u>
- Ed = 2 miles/hour
- Adam = 4 miles/hour
<u>Work:</u>
Adam => 0 miles
Adam => 4 miles => 1 hour
Adam => 8 miles => 2 hour
Hence, <u>both will be at equal distance at 8 miles in 2 hours.</u>
Hoped this helped.

Linear
Step-by-step explanation:
because a linear changes at a constant rate and an exponential changes by a common ratio
Use Pythagorean theorem.
15^2+20^2=c^2
225+400=c^2
√655=c
c=25
Answer: D.) 25 m
337.44 is the exact answer. Happy to help.