Q4 a. Find the median mark * 2 points
Chloe recorded the test marks of 20 students.
The stem and leaf diagram shows this information?
1
5 7 8 9
2
0 0 3 78
Key:
115 means 15 marks
3
1 4 5 6 8 9
4 | 1 2 2 6 7
Your answer

whats the

step-by-step explanation:

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(a) {a₁, a₁r, a₁r², … a₁rⁿ⁻¹, …}

(b) $59 398

step-by-step explanation:

(a) the annual sequence of profits

aₙ = a₁rⁿ⁻¹

the model for the sequence of profits is {a₁, a₁r, a₁r², … a₁rⁿ⁻¹, …} .

(b) profit after 15 yr

  a₁ = $ 30 000

  r = 1.05

a₁₅ = 30 000 × 1.05¹⁴

a₁₅ = 30 000 × 1.979 93

a₁₅ = $59 398

the profit in year 15 will be $59 398.