Can someone please answer this question please answer it correctly and please show work please help me I need it

$ -400

Step-by-step explanation:

Let's find each year's profits:

2010 = (-400)

2011 = (-200)

2012 = (200)

To find the total profits from 2010 - 2012, we will add all the values.

(-400) + (-200) + 200

(-600) + 200

200 - 600 = (-400)

$ -400

= 5

step-by-step explanation:

to find the 15th term substitute n = 15 into the nth term formula

= (- 3 × 15 ) + 50 = - 45 + 50 = 5