Without using a calculator, determine the sum of all the intergers from -50 to +50 describe you're strategy

Isee the amount was $90.00 then reduced to $75.00 , what is the percent ?

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?

Which two transformations are applied to pentagon abcde to create a'b'c'd'e'? (4 points) translated according to the rule (x, y) ? (x + 8, y + 2) and reflected across the x-axis translated according to the rule (x, y) ? (x + 2, y + 8) and reflected across the y-axis translated according to the rule (x, y) ? (x + 8, y + 2) and reflected across the y-axis translated according to the rule (x, y) ? (x + 2, y + 8) and reflected across the x-axis