Sumaya is reading a book with 288 pages. She already read 90 pages. She plans to read 20 more pages each day until she finishes the book. A, Sumaya writes the equation 378 = -20d to find the number of days she will need to finish the book. Identify the errors that Sumaya made. B. Write and solve an equation to determine how many days Sumaya will need to finish the book. In your answer, count part of a day as a full day. Show that your answer is reasonable.

Question

mathmale · Answer

Given that Sumaya has already read 90 pages, how many pages has she left to read?

Come up with a function for "number of pages Sumaya has left to read."  What is the initial value of this function, when t=time=0?

How would "20 pages per day" fit into this equation?

How would time "t" fit into this equation?