When radioactive substances decay, the amount remaining will form a geometric sequence when measured over constant intervals of time. the table shows the amount of a radioactive isotope initially and after 2 hours. what are the amounts left after 1 hour, 3 hours, and 4 hours? initial isotope is 1866; amount after 2 hours is 453.

if x decreases by 4 then y increases by 10

step-by-step explanation:

answer: the price of one pound cabbage = $ 0.8

the point (10,8) represents that the cost of 10 pounds cabbage is $ 8

step-by-step explanation:

since, here is a proportional relation between the number of pounds of cabbage (x) and the price in dollars (y).

therefore, we can write,

⇒ y = k x

where k is the constant of proportionality.

now, point (5,4) is in the line.

thus, it will satisfies the above equation of line.

⇒ 4 = 5 k

⇒ k = 0.8

thus, the equation of the line is,

y = 0.8 x

a) for x = 1,

y = 0.8

therefore, the cost of one pound of cabbage is 0.8 dollars.

b) in the below graph (10,8) represents that the cost of 10 pounds of cabbage is 8 dollars.

can you make your screen more see able?

then i might be able to .

i would say true? if the unit was informational and it "refreshed your understanding", then true.