Find the 8th term of the geometric sequence –4, 12, –36, 108, –324,

pls mark me as brainliest

Step-by-step explanation:

This is a geometric sequence since there is a common ratio between each term. In this case, multiplying the previous term in the sequence by

3

gives the next term. In other words,

a

n

=

a

1

⋅

r

n

−

1

.

Geometric Sequence:

r

=

3

This is the form of a geometric sequence.

a

n

=

a

1

r

n

−

1

Substitute in the values of

a

1

=

4

and

r

=

3

.

a

n

=

(

4

)

⋅

(

3

)

n

−

1

Remove parentheses.

a

n

=

4

⋅

3

n

−

1

Substitute in the value of

n

to find the

n

th term.

a

8

=

4

⋅

3

(

8

)

−

1

Subtract

1

from

8

.

a

8

=

4

⋅

3

7

Raise

3

to the power of

7

.

a

8

=

4

⋅

2187

Multiply

4

by

2187

.

a

8

=

8748

answer: no

step-by-step explanation:

you are only given the cost not the amount of pounds.

she was supposed to add the hours(38.5) and multiply the amount of money she earned(7.50) resulting in $288.75 .

correct me if i'm wrong and if it is i'm truly sorry.