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wariber [46]
3 years ago
6

Find the inverse of the function. f(x) = 7x + 2

Mathematics
1 answer:
solmaris [256]3 years ago
3 0
F ( x ) = 7 x + 2
y = 7 x + 2
- 7 x = - y + 2  /*(-1)
7 x = y - 2   / : 7
x = y/7 - 2/7 = ( y - 2 ) / 7
The inverse of the function is:
f^(-1) ( x ) = ( x - 2 ) /7 

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The school cafeteria sells two kinds of wraps: vegetarian and chicken. The vegetarian wrap cost $1 and the chicken wrap cost$1.8
vfiekz [6]
Let us assume the number of vegetarian wraps made = x
Let us assume the number of chicken wraps made = y
Then
x + y = 70
x = 70 - y
And
x + 1.80y = 98.80
Putting the value of x from the first equation in the second equation, we get
x + 1.80y = 98.80
70 - y + 1.80y = 98.80
0.80y = 28.80
y = 36
Putting the value of y in the first equation, we get
x + y = 70
x + 36 = 70
x = 34
From the above deduction, we can conclude that the number of vegetarian warps sold was 34. I hope the answer has come to your desired help.
6 0
3 years ago
Tony's math grades are 85, 92, 95, 81, and 92. What is his average grade in math?
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89

Step-by-step explanation:

85+92+95+81+92=445 and since there are 5 numbers you're going to divide by 5 so 445/5 which is 89

4 0
3 years ago
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What is the value of the expression <br> 7⋅(−5)⋅4?
Masja [62]
Multiply each number. Remember that when multiplying a negative and positive number, the outcome will be negative

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3 years ago
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1.5r – 3r + 8r + 2.5r​
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Step-by-step explanation:

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2 years ago
Find the length of a rectangle with a perimeter of 76 inches and width of 16 inches.
levacccp [35]

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Step-by-step explanation:

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