Can Someone please let me know if I got his question right!!! A system of linear equations is shown below as well as the first step that Raif is using to solve this system of linear equations by substitution. Choose the best statement that best describes how Raif is progressing towards a solution.
7x+y=4
3x-2y=3
Solution: solve the first equation to obtain y=-7x+4. Substitute this into the second equation to get 3x-2*-7x+4=3

1. Raif should have substituted for x in the second equation
2. Rafi substituted the wrong equation and should have done the first equation
3. Rafi needs to simplify the expression
4. Rafi forgot to place the substituted expression in parentheses

I think it 1 but I’m not sure

I think.. it..1..but..I'm..not..sure

answer: there are x+184 pages in olivia's book.

step-by-step explanation:

let the total number of pages in the book which olive has already read be x.

then if olive has 184 pages left to read, then the total number of pages are in olive's book= pages she has read+pages she has left to read

therefore, the total number of pages in olivia's book=

hence, there are x+184 pages in olivia's book.

6,250

step-by-step explanation:

to get the area, multiply 360 by 160.(57,600)

to find out how many bags of fertilizer it will take, first figure out how many square feet one bag can hold. divide 1000 by 8(125) to get the unit rate(how many square feet one pound of fertilizer can hold)and multiply it by 50(6250). if i haven't made a mistake, that is the answer.