Answer:
1 = The constant of proportionality is 1.75
3 = 17.5
Explanation:
1 - Divide flour (f) by sugar (s), and you'll get 1.75, and do that for all of them and that's the constant of proportionality!
3 - Multiply 1.75 by 10, and you'll get 17.5
That's all I can answer because I am only in middle school, but that's what my teacher said to do! And I JUST did this 2 months ago in 8th grade. Hope this helped! This is correct by the way! Bye!