What are the missing operations?
a. 48 ? (-8) = (-6)
b. (-40) ? 8 =(-5)
c. 12? (-2) = 14
d. 18 ?(-12) = 6
e. 18 ? (-20) = -2
f. 22? (-0.5) =-11

Describe all the numbers that when rounded to the nearest thousand are 645,000

The graph shows the distance kerri drives on a trip. what is kerri's speed . a. 25 b.75 c.60 d.50

He ! a group of farmers planned to clean 80 acres of wheat per day to finish the work on schedule. right before the work started, they received a new piece of machinery that them clean 10 more acres per day than originally planned. as a result of increased productivity in the last day before the deadline they only had to clean 30 acres. how many acres of wheat did the group of farmers have to clean?