Answer:

Step-by-step explanation:
First, subtract 50.45x from both sides. Then divide by 7.5 on both sides.

No image shown but just remember that percentage is out of 100
0.03 is 3%
A n =?
If the arithmetic sequence is:-20, - 16, - 12 , - 8 ...
a 1 = -20, d = 4 ( a 2 = -20 + 4 = -16, a 3 = -16+4 = -12,...)
And the formula for nth term is:
a n = a 1 + d (n -1)
a n = -20 + 4( n -1) (n=1.2.3...)