Chuck drops a rock from a height of 70 m. how long will it take the rock to hit the ground? use the formula h(t)=−4.9 t 2 + v o t+ h o , where v o is the initial velocity and h o is the initial height. round to the nearest tenth of a second.

3.8

Step-by-step explanation:

your suppose to round (btw do u have the rest of this test answers yet because i need them too)

pay attention in your classes and concentrate the best thing you can do to raise your test scores is to pay attention when you're supposed to be learning the material: in class!

take good notes.

do your homework.

use mnemonics and other tricks.

do practice tests.

note: the best i know.

if you are saying purchasing 3 social media ads and one newspaper ad counts as one purchase then there are:

6 purchases

if you are asking how many of each then:

18 social media ads

6 newspaper ads