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KATRIN_1 [288]
2 years ago
10

If f(x) = 2x-1 what is f(4)

Mathematics
1 answer:
mamaluj [8]2 years ago
8 0
F(7) is your answer because you plug in 4 to the x so 2•4-1 you times 2 and 4, get 8 then 8-1 is 7, have a good day/night!!!
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3 years ago
Mario invests 1,500 in a savings account that earns 2% interest a year. He also plans to set aside $50 cash a month. A:2100(1.02
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Answer:

<em>1500(1.02)^x  +   600x</em> is how much he has in savings at the end of x years where it be in the bank or elsewhere

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Before the years even start, you are at 1500 ( present value).

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The next year (year 2), it would be 1500(1.02)(.02)+1500(1.02)=1500(1.02)(1.02).

We keep multiplying factors of (1.02) each time.

So for year x, you would have saved 1500(1.02)^x.

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So the first year you would have 600.

The second year you would have 600(2) or 1200.

The third year you would have 600(3) or 1800.

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1500(1.02)^x  +   600x

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