Solve for Δ in the equation 14 × Δ - 21 = 77. Also, calculate the total pay for a farm worker in 6 weeks if they earn R150 per day for 5 days each week.

Filling the table for problem d):

The solution is $\boxed{\Delta = 7}$.

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Problem: A farm worker get paid R150 + 5 days every week. How much in 6 weeks?

Your final answer of R4500 is ✅ Correct.

However, the number sentence you wrote, "R150 + 5 * 6", is incorrect for reaching R4500.
The phrase "R150 + 5 days every week" is interpreted as the worker being paid R150 per day for 5 days each week.

Weekly pay is R150 per day for 5 days: $150 \times 5$.
Total pay for 6 weeks: $(150 \times 5) \times 6$.
Correct number sentence: $(150 \times 5) \times 6 = \text{Total Pay}$

First, calculate the weekly earnings:

Next, calculate the total earnings over 6 weeks:

The total amount the farm worker gets paid in 6 weeks is $\boxed{\text{R}4500}$.