13. Yao has 8 hours to finish reading a 300-page book. He has already read 120 pages. Yao read 50 pages the first hour. He does not read the next two hours. What is the least number of pages Yao
must read per hour to finish reading the book?
A 25 pages per hour
B 26 pages per hour
C 27 pages per hour
D 36 pages per hour

All per-unit concepts rely on ratios, meaning, to provide a type of measurement

Polygons efgh and e′f′g′h′ are shown on the coordinate grid: what set of transformations is performed on efgh to form e′f′g′h′? a. a translation 1 unit to the left followed by a 90-degree counterclockwise rotation about the origin b. a translation 1 unit to the right followed by a 90-degree counterclockwise rotation about the origin c. a 90-degree clockwise rotation about the origin followed by a translation 2 units to the right d. a 90-degree clockwise rotation about the origin followed by a translation 2 units to the left

What is the length of the segment, endpoints of which are intersections of parabolas y=x2? 11 4 x? 7 4 and y=? 7 8 x2+x+ 31 8 ?