What is the slope for (-10,0) and (0,10)

The measure of one angle of an octagon is two times smaller that of the other seven angles. what is the measure of each angle?

John has 1/2 pound of oranges to share with julie. if they share the oranges equally, how much will each of them have?

The ideal weight of a nickel is 0.176 ounce. to check that there are 40 nickels in a roll, a bank weighs the roll and allows for an error of 0.015 ounce in total weight