Here is the explanation I wrote on the paper. ASK QUESTIONS IN THE COMMENTS! I absolutely LOVE answering questions, and you understanding what I mean in my answer means the world to me.
If x=3 then the f(x)=4
If x=6 then the f(x)=7
If x=7 then the f(x)=8
Let 4units represent 800g, since the ratio of the masses is 7:5:4, with 800g being the lightest.
1 unit = 800/4 = 200g
hence, the mass of the heaviest cake will be 7 units, which is 7 x 200g = 1400g
2/3 is a fraction in simplest form
4/6, 8/12, 20/30 are all equivalent to 2/3, because they can be simplified to 2/3.
Answer:
x=21
Step-by-step explanation:
well, geez - just do the math!
3/7 * 49 = 21
