What is X equaled to

Iwill give brainliest only if your correct the words subsequent and submerge both contain the prefix sub. based on this information, what does the prefix sub most likely mean? a) under or secondary b) true or verifiable c) tricky or difficult d) around or centered on

Olga used 100 ounces of flour to make 225 muffins. how many ounces of flour will be used to make 300 muffins?

[10 points, algebra 2]according to my answer key the restrictions are -1 and 4. but why not positive 1?