Answer:
f(x) = x-6
Step-by-step explanation:
Since x = 6, which is a positive number, the answer should be of f(x) = x-6.
When x = -6, which is a negative number, then the answer should be f(x) = x+6.
Step 1
Given;

Required; To find the difference in interest between the two periods.
Step 2
State the formula for simple interest

Step 3
Find the interest when the rate is 8%

Therefore the interest is given as;

Step 4
Find the interest in 1980 with a 20% rate

The interest is given as;

Step 5
Find the difference in interest between the two rates.

Hence, the difference in interest between the two rates = $11095.89
I think 7a^3b^6, but im not sure so im sorry if it is wrong
Answer:
Step-by-step explanation:
Given is an equation in x and y as

We use implicit method to differentiate the above equation
18x-2yy'=0
y' = 9x/y
b) to solve the equation explicitly for y and differentiate to get y' in terms of x. y' = ±
We separate the variables as

Take square root

Answer:
4m
Step-by-step explanation:
0.8x5=4