PLease answer alot of points

15.a) 8 b) y+2 c)y-1

16. 2n

17. 2n+1 or 2n-1

18. a) (3p+4q) b) 5-(3p+4q)

Step-by-step explanation:

As per the given question here are the solutions:

15. a) 6 is an even number. so next even number is 6+2 = 8

b) y is an even number, so next even number is y+2

c) y is an even number, so largest odd number less than y will just before number of y that is y-1

16. Since all the even number is a multiple of 2 so, any even number can be written as 2n where n is any integer.

17. Any even number can be written as 2n where n is any integer.

So, any odd number can be written as 2n+1 or 2n-1

18. a) Given,

Each book costs = p

Number of books = 3

Total amount of books = 3p

Again,

Each pen costs = q

Number of pens = 4

Total amount of books = 4q

Total amount of books and pens = 3p+4q

b) The change from 5 cents will be 5-(3p+4q)

15) a) 8

b) y + 2

c) y - 1

16) True

17) 2n - 1, where n is an integer

18) a) 3p + 4q

b) 500 - 3p - 4q

1. 8

2. 9

3. 20

4. 3

5. 17

6. 2.2

7. 11.25

8. 1

9. 14

10. 2

step-by-step explanation:

thats the first half