Answer:
Step-by-step explanation:
7.56 × 10^3
= 7.56×1000
= 7560
An for arithmetic sequence, an = a + (n - 1)d
a8 = a + (8 - 1) x 5 = a + 7 x 5 = a + 35 = 56
a = 56 - 35 = 21
Therefore, an = 21 + (n - 1) x 5 = 21 + 5n - 5 = 16 + 5n
an = 16 + 5n
Answer:
20%, 40%, 60%, 80%
Step-by-step explanation:
1/80 = 0.0125
1/5 = 0.2
0.0125-0.2 = -0.1875
-0.1875 = -3/16
