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3 years ago

Which point is a solution to 4x + 6y =18 answer choice (4,6) (1,3) (6,4) (3,1)

Mathematics

2 answers:

HACTEHA [7]3 years ago

5 0

Answer:

The answer is (1, 3) or Option B.

Step-by-step explanation:

Option A isn't correct it doesn't match up as a solution to this problem.

Option B is correct it matches up as the solution to this problem.

Option C isn't correct it doesn't match up as a solution to this problem.

Option D isn't correct it doesn't match up as a solution to this problem.

You could also identify each point on the graph and figure it out.

Hope this helps! :D

(Can you mark me brainliest? It is greatly appreciated!)

- ❤ 7272033 ❤

Rus_ich [418]3 years ago

4 0

Answer:

Step-by-step explanation:

it could be that or (6,1), (0,3),(-3,5),(-6,7)

just look at the point on the graph.

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3 years ago

If f(x) is an exponential function where f(-2,5) = 9 and f(7) = 91, then find the value of f(12), to the nearest hundredth.

insens350 [35]

Answer:

$f(12) = 323.02$

Step-by-step explanation:

Given

$f(-2.5) = 9$

$f(7) = 91$

$f(12) = 16.7 * 1.28^{12$

Required

$f(12)$

An exponential function is:

$f(x) = ab^x$

$f(-2.5) = 9$ implies that:

$9 = ab^{-2.5}$

$f(7) = 91$ implies that:

$91 = ab^7$

Divide both equations

$91/9 = ab^7/ab^{-2.5}$

$91/9 = b^7/b^{-2.5}$

Apply law of indices

$91/9 = b^{7+2.5}$

$10.11 = b^{9.5}$

Take 9,5th root of both sides

$b = 1.28$

So, we have:

$9 = ab^{-2.5}$

$9 = a * 1.28^{-2.5}$

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$a = 9/0.54$

$a = 16.7$

f(12) is calculated as:

$f(x) = ab^x$

$f(12) = 16.7 * 1.28^{12$

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