8. A shipping company charges $8 to ship a package weighing 5 pounds or less. They charge an additional $3 per pound for each pound or fraction of a pound
over 5 pounds.
Write a piecewise function that represents the situation. How much will it cost to ship a package weighing 9 pounds?

A 9 pound package will cost $20.

Step-by-step explanation:

Let p be the number of extra pounds (after 5).

Cost = $8 + 3p

So $8 + 3*4 = $20

a₈ = 768 , a₁₀ = 3072

Step-by-step explanation:

The nth term of a GP is

= a₁

where a₁ is the first term and r the common ratio

Here a₁ = 6 and r = 2 , then

a₈ = 6 × = 6 × 128 = 768

a₁₀ = 6 × = 6 × 512 = 3072