Question

Someone help me please

Answer 1

Answer:

• 42 seats

Step-by-step explanation:

This represents an arithmetic progression with the first term of a = 15 and common difference of d = 3.

The tenth row is the 10th term:

• aₙ = a + (n - 1)d

The row 10 has:

• a₁₀ = 15 + 9*3 = 15 + 27 = 42 seats

Answer 2

• First term=a=15
• Common difference=d=3

$\\ \bull\tt\dashrightarrow a_n=a+(n-1)d$

$\\ \bull\tt\dashrightarrow a_{10}=a+9d$

$\\ \bull\tt\dashrightarrow a_{10}=10+9(3)$

$\\ \bull\tt\dashrightarrow a_{10}=15+27$

$\\ \bull\tt\dashrightarrow a_{10}=42$