The process used in the picture is cross multiplying. Make an x through the numbers and multiply them by each other. That's why 21 was multiplied by 14 and 49 was multiplied by n. The value of n is unknown, so it simplifies to 49n, and 14*21=21.4. So basically to recap, make an x, multiply the terms that are diagonal from each other, write both of the answers next to each other, and put an = sign in between them. If you don't understand I can try to explain differently ☺
(7+2-3-8)=0
N=7
Brainliest pts
Hope this helps
D
7•4 =28, -5•0 =0... 28+0=28
The red line is moving up from left to right, which means it is increasing.
I am not on this yet but i think it is f (x) < 1 < x < 3
