Answer:
9 more weeks!
if you add 10 each week you find out.
Step-by-step explanation:
1 more week will be $109, 2 more weeks will be $119, 3 more weeks, $129, 4 more weeks $139, 5 more weeks will now be $149, the 6th week is $159, the 7th week is $169, the 8th week is $179, the 9th week will be $189. $189 is precisely what she needs for the camera.
Answer: a) 300000 b) 200 c) 20000
Step-by-step explanation:
Round so that there is only 1 sig. fig. in the answer
a) 300000 (rounded up to 300,000 not 280,000 as there would be 2 sig figs, 2 and 8)
b) 200 (rounded down)
c) 20000 (rounded up to 20,000 not 18,000 as there would be 2 sig figs, 1 and 8)
The trailing zeroes do not count as sig. figs. so the above answers all have only one sig. fig.
Answer:

And on this case the samllest possible value would be 1
Step-by-step explanation:
For this case we have the following expression:

And we can rewrite this expression like this:

For this case is important to remember the following property from algebra:


On this case we can see that 
So then 
So then we can simplify all the expression and we got this:

And on this case the samllest possible value would be 1
I would factor it or graph it