Don't forget, for a whole number like the first term, the decimal point lies just to the right of the ones column. ... To subtract these numbers, first arrange the terms vertically, aligning the decimal points in each term. You can add zeroes to the right of the decimal point, to make it easier to align the columns
Answer:
Choice D
Step-by-step explanation:
If you check each one plugging in your info into this you can get 
that 12² + 16² will equal 400 which is the same as 20².
Answer:
Step-by-step explanation:
Divide both sides by 7:
Subtract 4 from both sides:
Answer:
f(x) = 500(1/2)^x
Did this end up in the wrong category lol
