If £1=$1.56, what is $1 worth

X+y=-4 x-y=2 use elimination with adding and subtraction

Hurrya vegetable garden and a surrounding path are shaped like a square that together are 11ft wide. the path is 2ft wide if one bag of gravel covers 9 square feet how many bags are needed to cover the path

Simplify the algebraic expression 8y-2(y+4)