Mr. duc asked perry to set up 450 chairs in a large hall. perry puts 20 chairs in each row. he has already set up 15 rows of chairs. how many more chairs must he set up?

a.
300 more
b.
35 more
c.
150 more
d.
no more chairs are needed.

Which of the following expressions are equivalent ?

Three friends went on a road trip from phoenix, az, to san diego, ca. mark drove 50 percent of the distance. jason drove 1/8 of the distance. andy drove the remainder of the distance. 1. andy thinks he drove 1/4 of the distance from phoenix, az, to san diego, ca. is andy correct? 2. the distance from phoenix, az, to san diego, ca, is 360 miles. how many miles did each person drive? 3. solve the problem. what is the answer in total?

Which pair of expressions is equivalent? a 7(1–k)and7–k b 7(1–k)and1–7k c 7(1–k)and7–k d 7(1–k)and7–7k