T + k = 1655
k = t + 239
now we sub
t + t + 239 = 1655
2t + 239 = 1655
2t = 1655 - 239
2t = 1416
t = 1416/2
t = 708 ft <== terminal tower
k = t + 239
k = 708 + 239
k = 947 ft <=== key tower
Angle 8 and Angle 3 are supplementary same side angles
Answer:

Step-by-step explanation:
The given equation is:

so, we first isolate the exponential form that contains the unknown "z" in the exponent, by dividing both sides by 0.5:

Now we bring the exponent down by applying the natural log function on both sides, and then solve for "z":
