set up proportion based on corresponding sides of similar triangles:
15 / 10 = 15 + x / 12
cross-multiply:
10(15 + x) = 15(12)
150 + 10x = 180
10x = 30
x = 3
Answer from: Quest
f(x) has value 150 at x= 0
and 0 at x= 3
so d(f(x))/dt = slope = -150/3 = -50
Answer from: Quest
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step-by-step explanation:
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