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Nonamiya [84]
3 years ago
9

Given f(x) = 2x2+3 fins f(-3)

Mathematics
1 answer:
artcher [175]3 years ago
6 0

I'm assuming that you are given the equation f(x) = 2x^2 + 3 and the value f(-3).

To find this, all you need to do is plug in the value of -3 in f(x) for all x values. It would look like:

f(x) = 2(-3)^{2}  + 3

All you need to do is simplify:

f(x) = 2(9) + 3

f(x) = 18 + 3

f(x) = 21

Your final answer is f(x) = 21.

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Answer:

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Step-by-step explanation:

We know that for each 13$ Rob earns babysitting, he saves 9$. Thus, we can separate the money he earns into groups of 13, and for each group of 13, we can add 9$ to his savings.

Assume that Rob has 78$ lying on a table. He grabs 13 of them, leaving 65, and puts 9$ to the side for savings. He does this 5 more times (as 65 divided by 13 is 5, so Rob would make 5 groups of 13 out of his 65$ that is left), meaning that he now has 5+1  (the original group) = 6 groups of 9. 9*6=54, so he saves 54$. Please let me know if you have any further questions!

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