QUESTION 1
Given that:
,
,
and
Then;
Group similar terms;
Simplify;
QUESTION 2
Given that;
.
and
Substitute the functions;
Substitute x=3
QUESTION 3
Given:
This implies that;
Expand the parenthesis;
QUESTION 4
The given function is;
Let
The range is:
The interval notation is;
Find 20% first
20% of 84 is 16.8
tax is 7% of 84 which is 5.88
total
84+16.8+5.88=$106.68
Answer:
$81.92
Step-by-step explanation:
Week 1:
250 * 20% = 50
250 - 50 = 200
Week 2:
200 * 20% = 40
200 - 40 = 160
Week 3:
160 * 20% = 32
160 - 32 = 128
Week 4:
128 * 20% = 25.6
128 - 25.6 = 102.4
Week 5:
102.4 * 20% = 20.48
102.4 - 20.48 = 81.92
Well, we know the last three numbers are:
3 (ones)
6 (tens)
7 (hundreds)
The next set is:
9 (thousands)
3 (ten thousands)
0 (hundred thousands)
And finally:
6 (millions)
5 (ten millions)
6 (hundred millions)
So we know that 5 is in ten millions.