Answer:
Book Store
Step-by-step explanation:
Find the unit rates by dividing the price by the number of books
Store:
price/books
13.12/2=6.56
$6.56 per book
Online
price/books
46.48/7=6.64
$6.64 per book
So, the book store has the lowest price
Hope this helps! :)
Answer: Linear
Step-by-step explanation: When determining whether the function table represents a linear or exponential relationship, we are checking to see if the rate of change is constant or increasing. If we look at the table, when x increases by 1, y increases by 3. This means that on that interval, the average rate of change is 3/1 = 3. When we increase x by 1 again, we see that y increases by 3 again. This means that the rate of change is constant for the function, so it must be linear.
One Half-Life of polonium = 138 days
We have to find the number of half-lives that occur in 1104 days. For this we simply divide 1104 by 138.
Number of half-lives in 1104 days = 1104/138 = 8 half-lives
Thus, in 1104 days polonium-210 undergoes 8 half-lives i.e. it is halved 8 times.
Initial Amount of sample= 30 gram
The amount remaining after 8 half-lives will be = 30 x (0.5)⁸ = 0.1171875 grams.
This means, after 1104 days, 30 gram sample of polonium-210 will be reduced to 0.1171875 grams only.
Answer:
no
Step-by-step explanation:
if Jacob completes 4/8 then he finishes 0.5 half for the homework
if Jess completes 8/10 then he finishes 0.8 'the for the homework
if Katie completes 12/15 then he finishes 0.8 'the for the homework
thus can be concluded Jess and Katie completed same amount of their homework - 80% of the total homework, but Jacob completed only half of his homework - 50%.