<h2>
Answer: what = 3t </h2>
<h3>
Step-by-step explanation:</h3>
4^t × 2^t = 2^what <em> [convert all terms to the same base (2)]</em>
∴ 2^t × 2^t × 2^t = 2^what <em> [us</em>e the <em>multiplicat law of exponents]</em>
2^(t+t+t) = 2^what <em> [simplify]</em>
2^3t = 2^what
<h3> what = 3t </h3>
The possible lengths of the garden would be all of the common factors of 1200.
1 , 1200
2 , 600
3 , 400
4 , 300
5 , 240
6 , 200
7 , 171.43
8 , 150
9 , 133.33
10 . 120
11 . 109.09
12. 100
13. 92.31
14. 85.71
15. 80
16. 75
17. 70.59
18. 66.67
19. 63.15
20. 60
And so on. (all of the above are in pairs)
I am pretty sure that the correct answer is
B. 8 11/16 hr