There is a 150% markup on a $399 laptop and there is a sale for 25% what is the sale price?

According to the number line, what is the distance between points a and b? v ++ + + + + -16 -14 -12 -10 -8 + 6 + 4 + -2 + 0 + 2 + 4 + 6 + 8 + 10 + 12 + 14 + 16 o6 units o 7 units 12 units o 14 units

What is the frequency of the sinusoidal graph?

The standard deviation for a set of data is 5.5. the mean is 265. what is the margin of error?