A is .898 B is 1 and C is 1.009
Answer:
75 seconds
Step-by-step explanation:
Here, we want to get her time 6 weeks ago.
We shall have an exponential model to link this all up
The exponential model would look like;
y = I(1 - r)^n
where y is the present time
I is the initial time she started with which we are calculating
r is the rate of change which is 2% = 2/100 = 0.02
n is the week number which is 6 in this case
So we have;
66 = I(1 - 0.02)^6
66 = I(0.98)^6
I = 66/0.8858
I = 74.5 seconds
This is approximately 75 seconds
Her time 6 weeks ago is 75 seconds
ANSWER
w=23 inches and l=28 inches.
EXPLANATION
The given rectangle has perimeter,
The width of the rectangle is 9cm more than half the length.
Let the length be
inches.
The formula for perimeter is,
We substitute the values to get,
Expand:
The width is