Answer:
Recursive
a(1) = 9 ; a(n+1) = 3 * a(n)
Explicit
a(n) = 9 * 3^(n-1)
Answer: In 1225 miles, there are ≈7.7629 x 10⁷ inches
Step-by-step explanation:
Given that
1 inch≈ 1.578 × 10 -5 miles.
?? inches = 1225 miles
Solving
(1,225 x 1 inch) / 1.578 x 10 ⁻⁵)
=77,629,911 changing to scientific notation becomes 7.7629 x 10⁷ inches
20/q = 7/9
20×9 = 7q
7q = 180
q = 180/7
