The wavelength of yellow light in a spectrum is about 0.00002 inches. Which number best approximates this length as a power of 10?
A. 2 x 10-5
B. 2 x 10^5
C. 2 x 10-4
D. -2 x 10^5

Solve 3x-18=2y and 5x-6y=6 by elimination show work

The amount spent on food and drink by 20 customers is shown below what is the modal amount spent and the median? 40 25 8 36 18 15 24 27 43 9 12 19 22 34 31 20 26 19 17 28

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.