William earns straight commission as a real-estate agent. Last month his total sales were R971 168, 00. If William earns a 3% rate of commission, what was his total income last month?

Commission = 3% of R971 168.00
Commission = $\frac{3}{100} \times 971168$
Commission = $0.03 \times 971168$
Commission = R29 135.04

William's total income last month was his commission.
William's total income = R29 135.04

2.2

Number of years ($n$) = Daughter's future age - Daughter's current age
$n = 21 - 17 = 4$ years

Given:
Principal ($P$) = R5 900
Interest rate ($i$) = 7.5% = 0.075
Number of years ($n$) = 4

$A = 5900(1 + 0.075)^4$
$A = 5900(1.075)^4$

$A = 5900 \times 1.335469140625$
$A = 7879.2678296875$

The amount in the bank when she is 21 years old will be R7 879.27.

2.3
2.3.1

The value is $\boxed{-19}$.

2.3.2

The value is $\boxed{\frac{64}{49}}$.

QUESTION 3

3.1
3.1.1

3.1.2

3.1.3

3.1.4

The simplified expression is $\boxed{\frac{2}{x - 1}}$.

3.2
3.2.1

Here, $a^2 = 16y^2 \implies a = \sqrt{16y^2} = 4y$.
And $b^2 = p^2 \implies b = \sqrt{p^2} = p$.

3.2.2

We need to find two numbers that multiply to 14 and add up to 9.
These numbers are 2 and 7 ($2 \times 7 = 14$ and $2 + 7 = 9$).