Question

Naoya read a book cover to cover in a single session, at a rate of 55 pages per hour. After 4 hours, he had 350 pages left to read.
Let y represent the number of pages left to read after x hours.

Which of the following could be the graph of the relationship?

choose 1 answer:

Answer 1

In 4 hours, Naoya must have read

$\dfrac{55\text{ pages}}{1\text{ h}} \times 4\text{ h} = 220 \: pages$

$=220\text{ pages}$

There were 350 pages remaining at the time, so the total number of pages is 220+350=570220+350=570 .

For each hour of reading, Naoya reads 55 pages, so the number of pages he's finished reading by the t 'th hour is 55ti . So the number of pages left to read is given by

P(t)=570−55t

Answer 2

Answer:

C

Step-by-step explanation