Question

2. STEM An optometrist surveys some patients to find out whether they

mostly wear glasses or contacts and whether or not they sometimes need
eye drops during the day to help with dry eyes. The optometrist records
the data in a table. Complete the table.
How did they complete the table? I don’t understand how they solved the missing data.

Answer 1

Read

Explanation:

Just reading the top line. If the the total percent of people who need glasses is 37%, we turn that into a decimal, 0.37. Put that into the total glasses spot. 7% are no eye drops, so 0.07 in decimal form. Subtract 0.07 from 0.37 to find the amount that needs eye drops.