An artist uses 18 colors on an art palette to paint a picture. This is 72% of all the colors on the palette. How many colors are
1 answer:
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Answer:
-149
Step-by-step explanation:
=-11 + (n - 1)(-3)
by observation
when n = 0, = 1st term
when n = 1, = 2nd term
.....
when n = x, = (x+1)th term
hence if we want to find the 48th term, n = 48 - 1 = 47
when n = 47, = 48th term
= -11 + (47-1)(-3)
= -11 + 46(-3)
= - 11 - 138
= -149
