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____ [38]
3 years ago
5

What is the inverse of the function f(x) = x + 2?

Mathematics
1 answer:
wolverine [178]3 years ago
8 0
Turn f(x) into y so the equation is y=x+2. Now switch their places so it is x=y+2. Now solve for y. The answer is y=x-2.
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Express 23,495 in scientific notation.
Natasha2012 [34]
2.3495x10^4th. Count how many places you move the decimal, that is what power you apply to 10 after converting it to a decimal.
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3 years ago
Read 2 more answers
1. COST Mr. Rivera wants to purchase a riding lawn
antiseptic1488 [7]

Answer:

p(x) = 0.85x

t(x) = 1.065x

(t o p)(x) = 0.9x

$2700

Step-by-step explanation:

If the marked price is $x, then the function p(x) that gives the price of the riding lawn mower after 15% discount will be

p(x) = x(1 - \frac{15}{100}) = 0.85x

where x is the marked price.

Now, the function that gives the total cost with sales tax will be given by

t(x) = x(1 + \frac{6.5}{100}) = 1.065x

where x is the discounted price.

Therefore, the composite function that gives the total cost of the riding lawn mower on sale is given by

(t o p)(x) = 1.065(0.85x) = 0.9x ............ (1)

where x is the marked price.

If the marked price x = $3000, then Mr. Rivera has to pay for the riding lawn mower, from equation (1),

(t o p)(3000) = 0.9 × 3000 = 2700 dollars. (Answer)

8 0
3 years ago
How do you create a model of 15% of 60
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The answer is 9 by the way. Draw a circle with sixty slices, shade in 15% or 9 slices.
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The number of bacteria in a culture doubles every 5 minutes. At first there are 10, after 5 minutes there are 20, after 10 minut
garik1379 [7]
The answer is 160 because as you stated in the question the number of bacteria doubles every five minutes, and after 10 minutes there are 40. Therefore, after 15 minutes there are 80 (40 doubled is 80), and after 20 (another 5 minutes), the number of bacteria is the double of 80, which is 160.
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It takes 46 minutes for 10 people to paint 3 walls
Mice21 [21]

Answer:

It takes 46 minutes for 10 people to paint 3 walls

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You only have 4 people to paint the walls instead of 10 people

Therefore it will take 2.5 times as long (10/4=2.5)

2.5*92=230 minutes

5 0
2 years ago
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