6x + 7 = 13x - 9
7 + 9 = 13x - 6x
16 = 7x
16/7 = x....or 2 2/7 = x
The Pythagorean Theorem states that

, where a and b are the legs of a right triangle and c is the hypotenuse of the same triangle.
Average speed is given by total distance traveled divided the total time taken.
Given that the distance from Mason's home to their son's college campus is 154 miles, then a round trip (to and fro) <span>from their house to their son's college campus will be 2 * 154 = 308 miles and the journey took 5 and a half hours.
Therefore, the average speed is given by:
</span>

<span>
</span>
If any of these are a solution or answer even if it is close enough,
they may be
f(n) = 27 + 3d
f(n+27) = 3d
the second one is just an alternate version that math doesn't use often.
Answer:
8.3838384e+33
Step-by-step explanation:
283838383838382828 + 8383838388828299383838383838288888 = 8.3838384e+33