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Tresset [83]
3 years ago
14

The whittendale family purchases a new refrigerator on a no interest for one year plan. The cost is $1,385. There is no down pay

ment If they make a monthly payment of x dollars until the last month, express their last month's payment algebraically.
Mathematics
1 answer:
natali 33 [55]3 years ago
5 0
The answer is 1385-11x.
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If f(x) and r^(x) are inverse functions of eachother and f(x)=2x+5 what is f-1(8)?
boyakko [2]

recall that for inverse functions, <u>the range of the original is the domain of the inverse</u> and othe other way around.

so f⁻¹(8) is f⁻¹(x) but making x = 8, so the domain value in this case for the inverse is 8, and that's going to give us something, but let's nevermind that.

since the domain value is 8 for the inverse, that means, the same 8, is a range for the original f(x).

meaning, "some value of x" on the original, gives us a range of 8, then let's use that 8 in the original, BUT not on "x", but on "y", or f(x).

\bf f^{-1}(8)~\hspace{7em}\stackrel{f(x)}{8}=2x+5 \\\\[-0.35em] ~\dotfill\\\\ 8=2x+5\implies 3=2x\implies \boxed{\cfrac{3}{2}=x} \\\\[-0.35em] ~\dotfill\\\\ \stackrel{\textit{original f(x)}}{\left(\stackrel{x}{\frac{3}{2}}~~,~~\stackrel{y}{8} \right)}~\hspace{7em} \stackrel{\textit{inverse }f^{-1}(x)}{\left(\stackrel{x}{8}~~,~~\stackrel{y}{\frac{3}{2}} \right)}~\hfill f^{-1}(8)=\cfrac{3}{2}


so notice how the values swap places for the inverses, one's domain, is the other's range.


6 0
3 years ago
Need help with inscribed angles <br> If M
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Answer:

parallel yan po sagotttttt

6 0
3 years ago
Please answer this correctly
patriot [66]

Answer:

1/9

Step-by-step explanation:

first, u need 9 ---> 1/3

then u need 8 ---> 1/3 also

Multiply them and get...1/9

5 0
4 years ago
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Help asap! I need to solve this for my quiz and have no clue what it is
N76 [4]

Answer:

Step-by-step explanation:

8 0
3 years ago
Simplify 3 x n x p x 6
Natali5045456 [20]

Answer:

18np

Step-by-step explanation:

3 × n × p × 6

18 × n × p

18n × p

18np

<h2 /><h2 /><h2 /><h2>please follow me</h2>
5 0
3 years ago
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