At is the sum of the four times the largest negative integer and the small- est positive integer?

Idon’t understand this.. will someone ? will mark brainliest along with 20 points.

Me complete this proof! prove that a quadrilateral is a square. me with the steps for this proof.

Three people are traveling and need to exchange the currency of their native country for the currency of the country they are visiting. drag each exchange to the category that shows the ratio of currencies in that exchange.