Algebra

2. Algebra There are 5 plants on a small tray There are 20 plants on a large tray Mary buys xsmall trays. In terms of x how many plants are on the small trays? Click on the plant to find out

3. x x 5 5 Multiply the number of trays by the plants Mary has xsmall trays Each tray holds 5 plants We write this as 5x x

4. ! This has nothing to do with plants. There are 5 plants on a small tray There are 20 plants on a large tray Mary buys xsmall trays. She buys 3 more large trays. In terms of x how many large trays has Mary bought? Click on the plant to find out

5. x x 3 3 Mary has xsmall trays So there are the same number large trays as small ones (x) plus another 3 She has 3 more large trays. +

6. There are 5 plants on a small tray There are 20 plants on a large tray Mary buys xsmall trays. She buys x+ 3 large trays. In terms of x how many plants are on the large trays? Click on the plant to find out

7. 20 x + 3 20 Multiply the number of trays by the plants Mary has x+ 3 large trays. x + 3 Each tray holds 20 plants x We write this as 20x- 60

8. How many plants has she bought altogether? Click on the plant to find out

9. There are 5 plants on a small tray and Mary boughtx trays. 5x There are 20 plants on a large tray and Mary bought x + 3 trays. 20x - 60 25x - 60 Total number of plants