Does anyone have any ideas for multiplying 249 times 398 quickly and mentally? Everything online is too complex.

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

Write an inequality for this description. - one fourth of the opposite of the difference of five and a number is less than twenty.

What is the slope of the line? a. -5/2 b.2/5 c. 5/2 d.7/2