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

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

If you look in the graph, 100 is the starting point. At Minute 1, it went down to a fifty.

Which would be half of 100. This continues on until it can not go down any farther.

100-->50

50-->25

25-->12.5

12.5-->6.25

6.25-->3.125

the answer will be the last one

c.   x=2.4cm

step-by-step explanation:

similar triangles are triangles which have the same shape but not the same size. this means their angle measures are equal but their side lengths are not instead they are proportional. to solve, we will set up a proportion and solve.

a proportion is two equal ratios set equal to each other. we form the ratios by finding corresponding sides (sides which match to each other on both triangles by their position). out ratios will be one side of the small triangle over the corresponding side on the big triangle as shown below:

.

to solve the proportion, we'll cross multiply by multiplying numerator with denominator across the equal sign.