1) transform the polynomial into a perfect square trinomial to solve.
3x^2+24x=27
a) {-21, -11}
b) {-29,21}
c) {-41,9}
d) {-1,1}

a_n = a_1 + (n - 1)d

the first term is 6.

the common difference d = ?

when you find d, replace n with 7 and d with the common difference to find your answer.

range =5

step-by-step explanation:

to find the range, we take the largest value and subtract the smallest value.

the largest value is 5

the smallest value is 0

the range is 5-0   =5