Which of the following situations could be modeled by an exponential function? A. The amount of money collected by a charity increases by $5,000 each year. B. The water level of a tank decreases by 5 gallons every day. C. The number of people in a stadium is decreasing at a rate of 45% every 10 minutes. D. A tree was 10 feet tall when purchased and grows at a rate of 2 feet per year.

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:

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

ok then what happened.