Independent
..............
Answer: 3/5xr=t and 5/3xt=r
Step-by-step explanation:

bearing in mind, "t" is in years, 6months is just 1/2 year
solve for "r", you'd get a decimal amount, multiply times 100, to get the percentage form
Step 1 : Simplify both sides
-5(6a+21)=-15
(-5)(6a)+(-5)(21)=-15
-30a-105=-15
Step 2 : Add 105 to both sides
-30a-105+105=-15+105
-30a=90
Step 3 : Divide both sides by -30
-30a=90
—————
-30 -30
a = -3
Answer:
8%
Step-by-step explanation:
We will use the equation provided to solve this problem.

Lets plug in the values:
First, divide both sides by 800.
Multiply x by 1

Now, we multiply .08 by 100 to get our interest rate:
(.08)100 = 8
The interest rate is 8%