Appreciated.

i don't have a graphing calculator, no explanation needed.

r = 0.58

Step-by-step explanation:

One formula for the correlation coefficient is  

The calculation is not difficult, but it is tedious.

1. Calculate the intermediate numbers

We can display them in a table.

           x         y              xy                 x²                 y²          

        48.9   167.0       8 116.30      2 391.21     27 889.00

        24.8   157.4      3 903.52        615.04     24 774.76

        39.2    63.7      2 497.04     1 536.84       4 057.69

        40.0   144.7      5 788.00    1 600.00    20 938.09

         41.5   143.2      5 942.80    1 722.25    20 506.24

        29.1    149.2       4 341.72       846.81     22 260.64

       40.8     90.8      3 704.64    1 664.64        8 244.64

        41.9    173.6      7 273.84     1 755.61       30 136.96

       46.2    150.1      6 934.62     2 134.44     22 530.01

       23.7     -51.7     -1 225.29        561.69       2 672.89

       47.6    196.2     9 339.12      2 265.76    38 494.44

       20.7    66.8    1 382.75       428.49      4 462.24

     444.4   1451.0  58 049.07   17 522.58   226 967.60

2. Calculate the correlation coefficient

rick has $1400 and sally has $1500

step-by-step explanation:

to find amount of money rick has after 10 years :

principal = $1000 , time = 10 years , rate = 4% annually

to find amount of money sally has after 10 years :

her friend gives to pay her $50 per year, therefore money she has after 10 years = 50 × 10 = $500

also, sally gets $1000 after 10 years,

therefore, total amount of money sally has after 10 years = 500 + 1000 = $1500

so, after 10 years : rick has $1400 and sally has $1500