Step-by-step explanation:
al nth term:
numerator:

denominator:

so nth term :

b). 1; 11; 27; 49
first difference: 10; 16; 22
second difference :6
formula for 1st difference:3a+b
formula for 2nd difference:2a
Therefore:
2a=6
a=3
3a+b=10
sub in a
3(3)+b=10
9+b=10
b=1
sub into quadratic formula






So Tn:

Answer:
There is no error
Step-by-step explanation:
He stated with 15 15x and made 10 for each y=15+10
Answer: 12
Step-by-step explanation: 2 times of 8 is 16, but it says 4 less, so you subtract 4 and that equals 12.
Answer:
2/5
Step-by-step explanation:
To find Area you have times do length times Width so you would be doing 3/5 times 2/3 which would give you 2/5.