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deff fn [24]
3 years ago
9

If Landon checks his pulse for 12 minutes, what is his rate if he counts 1560 beats?

Mathematics
2 answers:
Lynna [10]3 years ago
7 0

It is 130 beats per minute.

Step-by-step explanation:

Just divide 1560 by 12.

LiRa [457]3 years ago
6 0
Correct answer to your answer would be 130!
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The spending limit on John’s credit card is given by the function f(x)=15,000+1.5x , where x is his monthly income. f^-1x . The
Katena32 [7]
<span>1.
"The spending limit on John’s credit card is given by the function f(x)=15,000+1.5x"

means that if the monthly income of John is $ 5,000 ,he can spend at most 

f(5,000)=15,000+1.5*5,000=15,000+ 7,500=22, 500 (dollars)

Or for example

if Johns monthly income is $8,000, then he can spend at most

 </span>f(8,000)=15,000+1.5*8,000=15,000+ 12,000=27,000 (dollars)<span>


2.
Now, assume that the maximum amount that John can spend is y.

Then, y=15,000+1.5x

we can express x, the monthly income, in terms of y by isolating x:

</span>y=15,000+1.5x
<span>
1.5x = y-15,000


</span>x= \frac{y-15,000}{1.5}
<span>
thus, in functional notation, x, the monthly income, is a function , say g, of variable y, the max amount:

</span>x=g(y)=\frac{y-15,000}{1.5}

since we generally use the letter x for the variable of a function, we write g again as:

g(x)=\frac{x-15,000}{1.5}
<span>
for example :

</span>g(50,000)=\frac{50,000-15,000}{1.5}= \frac{35,000}{1.5}= 23,333
<span>
tells us that if the maximum amount that John can spend is 50,000 $, then his monthly income is 23,333 $.

3.

If John's limit is $60,000, his monthly income is 

</span>g(60,000)=\frac{60,000-15,000}{1.5}= \frac{45,000}{1.5}=30,000<span>
 dollars.


Answer: $ 30,000

Remark: g is called the inverse function of f, since it undoes what f does.

instead of g(x), we could use the notation </span>f ^{-1}(x)<span>



</span>
6 0
2 years ago
Evaluate the following expression if x=4 28x - 9 (2x+ 6)​
musickatia [10]

Answer:

-14

Step-by-step explanation:

substitute 4 for x

28(4) - 9 (2(4)+ 6)​

multiply

112-9(8+6)

add numbers

112-9(14)

multiply

112-126

subtract

-14

6 0
2 years ago
Moesha needs $79 for a class trip. She already has $22 and she can earn the rest by babysitting for 8 hours. If h represents her
elena55 [62]

Answer:

79-22=8h

Step-by-step explanation:

She can earn the rest by babysitting for only 8 hours,

so take 22 from 79, divide the total by 8 and that is how much she gets per hour (8h)

6 0
3 years ago
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Answer:

Step-by-step explanation:

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7 0
3 years ago
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Pls help on #9 ASAP. thank you. I’ll give u as much points as i can ♡
Alinara [238K]
A. X> lobsters 
7 + x <= 18
X <= 11 lovsters. 

B. (7+3+10)
x= additional lobsters 
10 + x <= 24 
x<= 14 lobsters

C. 24/4 = 6 lobsters

Hope this helps.

6 0
2 years ago
Read 2 more answers
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