Answer:
7*4 = 28
50-28= 22
Explanation:
Joselyn has read a total of \(7 \text{ pages/day} \times 4 \text{ days} = 28\) pages in four days. To find out how many pages she still needs to read, you subtract the pages she has read from the total number of pages:
\[50 \text{ total pages} - 28 \text{ pages read} = 22 \text{ pages remaining.}\]
Joselyn still needs to read 22 pages to finish the book.