Simplify the given expression, using only positive exponents. Then complete the statements that follow. Can someone explain this to me pls​

Use the four functions below for this question. compare and contrast these four functions using complete sentences focus on the slope and y- intercept first, and then on any additional properties of each function

What is the sum of these mixed numbers 4 2/3+ 3 1/9

Which number is located at point a on the number line? a number line is shown from negative 10 to 10 with each interval mark on the number line representing one unit. point a is labeled one interval mark to the right of negative 5.