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olya-2409 [2.1K]
3 years ago
11

Evaluate the expression when a=-7. a^2+4a-2

Mathematics
1 answer:
andrey2020 [161]3 years ago
4 0

Plug in the value to solve the expression.

(-7)^2+4(-7)-2

49-28-2

19

Hope this helps.

頑張って!

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<u>Step-by-step explanation:</u>

Here we have , Tobias sent a chain letter to his friends . The number of people who receives the email increases by a factor of 4 in every 9.1 weeks , and can be modeled by a function P, which depends on the amount of time t weeks . Tobias initially sent letter to 37 friends . We need to write a function that model the number of people that receives email in week t . Let's find out:

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