Question

Which is the best estimate of x based on rounding the constants and coefficients in the equation to the nearest integer?

4.12(x – 7.89) = 18.12


A.
12.4

B.
12.5

C.
12.2

D.
12.6

Answer 1

@Death_The_Kid can you help me out with this one please

Answer 2

Sure

Answer 3

Ok I'm going to have you work it out with me this time because I explained it all the last time, ok?

Answer 4

1. identify. What are we working with, and what are the possible answers?

Answer 5

2. we will substitute the answer choices in for x. (example: 3(7-x)=2 and instead of x, we would substitute an answer choice. 3(7-4)=2

Answer 6

3. round. we will round the numbers (not the substituted answer choices) either up or down. (1-4=down 5+=up. don't worry about the extra numbers behind it.)

Answer 7

if you were doing it with me, your paper should look something like this

Answer 8

then you plug it into the calculator to find the correct answer. Now, you tell ME what the answer is!

Answer 9

D?

Answer 10

not quite
try again!

Answer 11

Oh I think it's 12.5

Answer 12

Yes! Good work!

Answer 13

Yay, thank you for helping me out!

Answer 14

I encourage you take notes on the things you learn on openstudy. I can't make you, but remember that during PASS testing, you won't be able to just ask someone do the answers.

Answer 15

Youre welcome!

Answer 16

alright i will!

Answer 17

:)

Answer 18

instead of using a regular notebook, i use microsoft word or textedit, and copy/paste my notes into there from openstudy or anywhere else and save it to my desktop in a school folder.