The table shows the expense of operating and owning four sel…

The table shows the expense of operating and owning four selected cars, by average costs per mile. Use the appropriate information in the table to solve the problem. Average Annual Costs Per Mile Model Operating Ownership Total Car A $0.22 $0.78 $1.00 Car B $0.14 $0.55 $0.69 Car C $0.28 $0.32 $0.60 Car D $0.17 $0.68 $0.85 If you drive 30,000 miles per year, by how much does the total annual expense for Car A exceed that of Car C over five years?

A dietitian collects data on daily sugar intake (in grams) f…

A dietitian collects data on daily sugar intake (in grams) from all 940 patients at her clinic. She finds the average intake is 52.3 grams with a spread around that average of 8.7 grams. She then randomly selects 60 patients for a follow-up study who averaged 49.1 grams per day with a spread of 7.4 grams. What statistical notation should she use to represent the value of 8.7?