11. The ages (in years) of 11 children and the number of words in their vocabulary. Find the correlation coefficient r.

Age, x

1

2

3

4

5

6

3

5

2

4

6

Vocabulary size, y

3

220

540

1100

2100

2600

730

2200

260

1200

2500

Asmall business produces and sells balls. the fixed costs are $20 and each ball costs $4.32 to produce. each ball sells for $8.32. write the equations for the total cost, c, and the revenue, r, then use the graphing method to determine how many balls must be sold to break even.

Hi, can anyone show me how to do this problem? 100 points for this. in advance

If abcde is reflected over the x-axis and then translated 3 units left, what are the new coordinates d? are he re