Floods can cause tremendous damage. They can ruin houses, roads and buildings. Floods can take down trees and cause mudslides. It often leaves mud, sand and debris behind. It can take months to clean up after a flood. What is the main idea?

Question 12 options:

Floods damage houses and roads.

Floods cause mudslides and leave debris behind.

Floods can cause a lot of damage.

hello from mrbilldoesmath!

answer:

a(n) - a(n-1) -3

discussion:

this ones a bit interesting. given a(n) = 5 - 3n consider this:

a(n-1) = 5 - 3(n-1)

          = (5 - 3n) + 3             => but a(n) = 5 - 3n, the first term

          = a(n)   + 3                 => subtract 3 from both sides

a(n-1) -3 = a(n)  

or

a(n) - a(n-1) -3

you,

mrb

10cm

step-by-step explanation:

ik

use this formula:

p(a\b) = p(a and b)/p(b).

take it from here.