Is -7 +4 equivalent to 4 + (-7) show the sum for each expression on a number line to justify your answer

In what organelle does photosynthesis take place?

Evaluate the function , when d = {9, 15, 30}. r = {5, 7, 12} r = {6, 10, 15} r = {6, 10, 20} r = {5, 12, 20}

Do xuan nam isgoing to invest $1000 at a simple interest rate of 4% how long will it take for the investment to be worth $1040?