To factor 9x²-4, you can first rewrite the expression as: A. (3x-2)²
B. (m)²-(2)²
C. (3x)²-(2)²
D. None of the above​

Mrs. avila is buying a wallpaper border to go on all of her kitchen walls. she wants to buy 5 extra feet of wallpaper border than she needs to be sure she has enough. she buys 55.5 feet of the border. the store owner selling the border uses the width of mrs. avila's kitchen to determine that the length of her kitchen must be 14.5 feet.

Assume that y varies inversely with x. if y=1.6 when x=0.5 find x when y=3.2

The relative growth rate for a certain type of fungi is 60% per hour.a small culture has formed and in just 6 hours the count shows to be 20,273 fungi in the culture.what is the initial number of fungi in the culture?