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steposvetlana [31]
2 years ago
15

Given ƒ(x) = −10x + 45, find x when ƒ(x) = 15.

Mathematics
1 answer:
Temka [501]2 years ago
5 0

Answer:

x = 3

Step-by-step explanation:

Given

f(x) = - 10x + 45 and f(x) = 15, then equating gives

- 10x + 45 = 15 ( subtract 45 from both sides )

- 10x = - 30 ( divide both sides by - 10 )

x = 3

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