Answer:
x = 1
Step-by-step explanation:
The reason the answer is one because, 1^2 = 1
and 1 - 1 = 0
No as complementary angles add up to whisk 180 degrees, however supplementary angle would be true for this question
You multiply fractions simply by multiplying numerators and denominators with each other:

Answer: 10.7 years.
Step-by-step explanation:
7,300 * (1 + 0.015)^x = 8,560 <=>
7,300 * 1.015^x = 8,560 <=>
1.015^x = 8,560 / 7,300 <=>
1.015^x = 1.1726 <=>
x = 10.694
To the nearest tenth:
x = 10.7 years