Ok please answer this, this is confusing to me

Translate the word phrase into a math expression. 15 fewer than the product of 4 and a number. (pls immediately)

Two times a number plus three times another number equals 4. three times the first number plus four times the other number is 7. find the numbers

Which number completes the system of linear inequalities represented by the graph? y> 2x – 2 and x + 4y 2 et 2 3 4