Please help me for the brainliest answer

a)  aₙ=9n - 2

b)  aₙ= (n+4)² -8, aₙ= (n+4)² -3, aₙ= (n+5)² -5

Step-by-step explanation:

a) 7, 16, 25, 34, 43, ...

AP with the first term of 7, and common difference of 9

aₙ= a₁+(n-1)d= 7+(n-1)*9= 7+9n-9= 9n -2

aₙ= 9n - 2

b) Pattern 1

If we assume

a₁= 3*2+3²

then

aₙ= 2(n+2) + (n+2)²= 2n+4+n²+4n+4= n²+8n+16- 8= (n+4)² -8

aₙ= (n+4)² -8

Pattern 2

If we assume

a₁=3*2 +(3+1)²

then

aₙ= 2(n+2)+(n+3)²= 2n+4+n²+6n+9= n²+8n+16 -3= (n+4)² - 3

aₙ= (n+4)² -3

Pattern 3

If we assume

a₁=3*2 +(3+2)²

then

aₙ= 2(n+2)+(n+4)²= 2n+4+n²+8n+16= n²+10n+25 -5= (n+5)² - 5

aₙ= (n+5)² -5

answer: t=3

step-by-step explanation:

answer: c i think

step-by-step explanation: