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Virty [35]
3 years ago
7

Helppppppp pleaseeeeee

Mathematics
2 answers:
masha68 [24]3 years ago
8 0
You sub in the numbers on the left column into the equation for x for example the first one is y=9-3(0) and solve for y by multiplying 3 times 0 which is 0 so y=9
ANEK [815]3 years ago
4 0

All you have to do is plug in the number for x, and find y. I will write this out as if in that chart you have shown.

x                            y = 9 - 3x                                    y

_______________________________________

0                           y = 9 - 3(0)                                  9

1                            y = 9 - 3(1)                                   6

2                           y = 9 - 3(2)                                  3

3                           y = 9 - 3(3)                                  0


Hope that helps!!


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In a lab, a colony of 100 bacteria is placed on a petri dish. The population triples every hour.
Evgesh-ka [11]

Answer:

a). 8100 bacteria

b). 519 bacteria

c). Infinite

Step-by-step explanation:

Population growth of a bacteria is given by the exponential function,

f(x) = P_{0}(1+\frac{r}{100})^{t}

Where f(x) = Population after time 't'

P_{0} = Initial population

r = Growth rate

t = Duration after t hours

If "100 bacteria gets tripled every hour"

300 = 100(1+\frac{r}{100})^{1}

3 = 1 + \frac{r}{100}

r = 100×(3 - 1)

r = 200

So the function is, f(x) = 100(3)^{t}

a). Population after 4 hours,

    f(4) = 100(3)^{4}

          = 8100 bacteria

b). Population after 90 minutes Or 1.5 hours

     f(1.5) = 100(3)^{1.5}

             = 519.61

             ≈ 519 bacteria

c). Population after 72 hours,

    f(72) = 100(3)^{72}

            = Infinite

4 0
3 years ago
Erica had $20 she spent on three gifts she spent 9 3/4 dollars on gift a and 4 1/2 dollars and gift b how much money did she hav
77julia77 [94]

Answer:

$5.75

Step-by-step explanation:

20=9.75 + 4.5 + c

20-9.75-4.5=c

5.75=c

6 0
3 years ago
Nick spends 18% of his monthly budget on his rent payment, which is $700.
Dahasolnce [82]

Answer: \frac{700}{y} =\frac{18}{100}

Step-by-step explanation: 18% is a fraction \frac{18}{100}

In this case since 700 18% of the budget we can do the same thing with the budget being valued as y.\frac{700}{y}

6 0
3 years ago
Subtract 7 from the product 3 times f
ahrayia [7]

Answer:

3f-7

Step-by-step explanation:

6 0
2 years ago
Brainliest to whoever can answer questions correctly ​
FromTheMoon [43]

Answer:

v ~ 32.72

Hope that helps!

8 0
3 years ago
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