Question

24. Look for Patterns Copy and complete
the sequence of numbers.
7.5, 6.25,5,

Answer 1

aₙ = 7.5 - 1.25*(n-1)

Explanation:

a₁ = 7.5*1.25(1-1) = 7.5

a₂ = 7.5*1.25(2-1) = 6.25

a₃ = 7.5*1.25(3-1) = 5.0

.....

aₙ = 7.5 - 1.25*(n-1)