Question

1.At a video arcade , Jenny buys 25 tokens.She uses two tokens for each game She plays.

a ) Write an expression for the number of tokens Jenny left after playing g games.
b) Find the number of tokens Jenny has left after playing 1,4,6,10 and 12 games.

Answer 1

a) 25-2g
b) 25-2(1)=23
25-2(4)=17
25-2(6)=13
25-2(10)=5
25-2(12)=1

Answer 2

The required expression is
`25-2g`

She left with 23 tokens after playing 1 game.

She left with 17 tokens after playing 4 game.

She left with 13 tokens after playing 6 game.

She left with 5 tokens after playing 10 game.

She left with 1 tokens after playing 12 game.

Explanation:

Consider the provide information.

Part (A)

At a video arcade, Jenny buys 25 tokens. She uses two tokens for each game She plays.

Let the number of games she plays represented by g.

For each game she need to use 2 tokens.

Thus for g games she will use 2g tokens.

Thus, the required expression is:
`25-2g`

Part (B) Find the number of tokens Jenny has left after playing 1,4,6,10 and 12 games.

The number of tokens Jenny has left after playing 1, is:

`25-2(1)`

`25-2`

`23`

Hence, she left with 23 tokens after playing 1 game.

The number of tokens Jenny has left after playing 4, is:

`25-2(4)`

`25-8`

`17`

Hence, she left with 17 tokens after playing 4 game.

The number of tokens Jenny has left after playing 6, is:

`25-2(6)`

`25-12`

`13`

Hence, she left with 13 tokens after playing 6 game.

The number of tokens Jenny has left after playing 10, is:

`25-2(10)`

`25-20`

`5`

Hence, she left with 5 tokens after playing 10 game.

The number of tokens Jenny has left after playing 12, is:

`25-2(12)`

`25-24`

`1`

Hence, she left with 1 tokens after playing 12 game.