Answer:
150
Explanation:
The formula for arithmetic sequences is:
f(n) = n1 + (n-1)d
where n is the term and d is equal to the difference between each term.
n1 is the first term in the sequence or -27 in this case.
Here, n is equal to 60 and d is equal to 3 since each term adds three and we know its arithmetic
So filling in the formula:
f(60) = -27 + (60-1)3
f(60) = -27 + 59*3
f(60) = -27 + 177
f(60) = 150