select the scenario that correctly represents the given graph.

a.
the weight of a radioactive material is halved every minute.
b.
the number of fish in a pond doubles every year.
c.
the price of a television decreases by 20% of its original price every year.
d.
the number of students registering for drama classes decreases by 20 students every hour.

C. The wight of a radioactive material is halved every minute

Step-by-step explanation:

the range is 19

step-by-step explanation:

the range is biggest number minus the smallest, so in this case it would be

41 - 22 = 19

$53.50

step-by-step explanation:

you have to subtract the amount of money chuck earned ($72.50) by the cost of the gas for the mower ($11.25) and the new string for the trimmer he bought ($7.75).

72.50-11.25=61.25

and then subtract $61.25 by the second thing he bought (the new string for the trimmer)

61.25-7.75=53.5

so in total it's $53.50 (53 dollars and 50 cents)