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elena-s [515]
3 years ago
9

45 POINTS!!!!!!!!!!

Mathematics
1 answer:
yanalaym [24]3 years ago
5 0
Y-3 is the correct answer
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Two friends Ana and Juan are buying books by joining the History Book
Travka [436]

Answer:

Ana  spent $17  per book on average.

Juan  spent $14.78  per book on average.

y = $15 + 17x--------- equation 1

y= $10 + 14.78 x------------- equation 2

Step-by-step explanation:

Ana has to pay a yearly fee of $15 to join.

She spends a total of $525 for 30 books.

The amount spent on books = Total amount - yearly fee

                                                 = $525- $15= $510

Price per book on the average = $510/30= $ 17

Ana  spent $17  per book on average.

Juan has to pay a yearly fee of $10 to join.

He spends a total of $350 for 23 books.

The amount spent on books = Total amount - yearly fee

                                                 = $350- $10= $340

Price per book on the average = $340/23= $ 14.78≅ $15

Juan  spent $14.78  per book on average.

The function can be established if y gives the total cost and x gives the number of books

y = $15 + 17x--------- equation 1

y= $10 + 14.78 x------------- equation 2

Juan has a better deal because the yearly fee is less also the price per book is less.

8 0
3 years ago
Sum of one-half of a number and 4 is -16. find the number
Lady_Fox [76]
X is the number
sum means add

sum of half a number and 4 means
(x/2)+4
result is -16

(x/2)+4=-16
minus 4 both sides
x/2=-20
times 2 both sides
x=-40
the number is -40
5 0
3 years ago
Ten points to the correct answer
ale4655 [162]
This should be the correct answer.

8 0
3 years ago
Read 2 more answers
Solve each system of equations algebraically y= x+5 y= -2x please help
Bas_tet [7]

Answer:

X= -5/3 Y= 10/3

Let me know if you need the work to be shown

7 0
2 years ago
Write an equation for the both term of the arithmetic sequence 30,26,22,18
balandron [24]

Answer:

I guess it decreases by 4 everytime so -4??? If thats what your asking

Step-by-step explanation:

30,26,22,18,14,10,8,4,-2.

6 0
2 years ago
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