What is the simplified version of 4+5y-6y+y

Write each expression in exponential form and find its value.| ! 2 x 2 x 2 x 2

Strawberries cause two hours per pound kate buys 5 pounds he gets 20% off discount on the total cost how much does kate pay for the strawberries

Which expression demonstrates the use of the commutative property of addition in the first step of simplifying the expression (-1+i)+(21+5i)+0