Sum means add, a number means x, and four means, uh, 4...
x+4. is what you're looking for
First one, third one and the last one. Hope this helps
Answer:
B) (7x + 6y)(7x − 6y)
Step-by-step explanation:
I think the answer would be inductive! I hope this helps!
Ratio: The relative size of two quantities expressed as the quotient of one divided by the other; the ratio of a to b is written as a:b or a/b.
Proportion: An equality between two ratios.
Hope I helped! Pls mark me brainliest! <3. :D