Niall has a half dollar, krista has a quarter dollar, Mary has a tenth of a dollar, and jack has a hundredth of a dollar. if they combine their money, do the 4 students have more or less then a dollar? Explain

Need on this geometry question. explain how you did it.

Acampus club held a bake sale as a fund raiser, selling coffee, muffins, and bacon and eggs sandwiches. the club members charged $1 for a cup of coffee, 3$ for a muffin , and $4 for a back. and egg sandwich. they sold a total of 55 items , easing $119. of the club members sold 5 more muffins than cups of coffee, how many bacon and egg sandwiches he’s did they sell

Your company will replace the asphalt roofs on all the buildings at the factory complex shown below. the buildings have flat roofs. you charge according to the total roof area. what is this area, in square yards?