Capacity (in TB) Price (in $) Disk drives have been getting larger. Their capacity is now often given in terabytes (TB) where 1 TB = 1000 gigabytes, or about a trillion bytes. A survey of prices for extemal disk drives found the data shown to the right. Find and interpret value of R 0.090 35.00 0.110 0.310 37.55 45.99 0.450 72.95 2.0 235.79 3.0 360.00 4.0 421.95 What is the value of R? % (Round to two decimal places as needed.) What is the interpretation of R? V be accounted for by a linear model on the of the drives. of these disk drives that The value of R = % indicates the percentage of the variability in the (Round to two decimal places as needed.)

Please answer a-d. Thanks

A filter removes 75% of the impurities of water that is passes throught it. Multiple filters can be used together to increase the purity of the water. This situation is represented by A=0.25^N, where A is the proportion of impurities remaining and n is the number of filters used. What proportion of impurities remians when four filters are used, to the nearest ten thousandth? Explain

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