The principal amount is 
<u>SOLUTION:
</u>
Given that, simple interest
;
after 3 years
We have to find the principal.
Now, let the principal amount be p.
Then,
Now, we know that, Balance = Principal amount + Simple Interest

Parallel lines have the same slope, so the slope of the new line is 1/2.
The line passes through (0,4), and this gives the y-intercept, which would equal 4.
The equation now would be: y = 1/2x + 4
Answer:
B
Step-by-step explanation:
The equation is y=mx+b
m=slope
b=y-intercept
Answer:
x = 8,
Step-by-step explanation:
.
for it is a denominator. Multiply both sides with the product of the two denominators:
:
.
.
Multiply both sides by one over the coefficient of x:
.
.