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xenn [34]
3 years ago
5

Given f(x)=2x-7 solve for f(x)0

Mathematics
2 answers:
Lelu [443]3 years ago
6 0

Answer:

f−1(x)=12(y−7). Explanation: Given: f(x)=2x+7. Let y=f(x). y=2x+7. Expressing x in terms of y gives us the inverse of x. y−7=2x. 2x=y−7. x=12(y−7)

Tanya [424]3 years ago
4 0

Answer:

if f(x)=0,

then 2x-7=0

so,x=7/2

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More math questions there are 2
7nadin3 [17]

<em><u>Problem One</u></em>

Remark

You don't pay a sales tax until cash is exchanged for goods or services.

So what is 70% off

Solution

Sale price = given price * (100% - 70%)

Sale Price = 72 * 30%

Sale Price = 72 * 30/100

Sale Price = 72 * 0.3

Sale Price = 21.6 dollars.

The sales tax is 5% of this amount

21.6 * 5/100 = 1.08

The total cost is = 21.6 + 1.08 = 22.68

Problem Two

If they marked up 100%, effectively they doubled the price.

New Price = old price + 100% of old price.

New Price = 48.50 + 48.50 = 97 dollars.

The sales tax is 6% * 97 = 6/100 * 97 = 5.82

Total Cost = Cost of item + Tax

Total Cost =97 + 5.82

Total Cost = 102.82 Answer <<<<

4 0
3 years ago
............................
Marina86 [1]
I think the best answer is A.
8 0
3 years ago
A recipe calls for 2 tsp of butter. Melinda wants to make 40% more servings than the recipe makes. Which expression represents h
zubka84 [21]
The answer is D. 1.4=140% She needs the necessary amount + 40% .
4 0
3 years ago
13. Max charges $3.50 per hour when he mows lawns, plus $6.00 for transportation expenses. Which function rule represents the am
Ymorist [56]

Ok so you are charging $3.50 for every hour you work and on top of that you are charging $6.00 for the transportation expenses. So the correct answer would be "y=3.50x+6.00" because x would be the amount of hours you work and y is the income you make.

7 0
4 years ago
There are 16 girls in a school club the number of girls is four more than twice the number of boys find the number of boys
Nina [5.8K]

Answer:

Number of boys = 6

Step-by-step explanation:

It is given that:

Number of girls in school club = 16

Let,

b be the number of boys.

g be the number of girls.

g = 2b + 4

Putting g=16

16 = 2b + 4

16 - 4 = 2b

2b = 12

Dividing both sides by 2

\frac{2b}{2}=\frac{12}{2}\\b=6

Therefore,

Number of boys = 6

4 0
3 years ago
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