A student performed row operations on a matrix as shown below. -4
1
24
1
2
4
0
- 1 3
1
->
0
-1
3
1
3
2.
4
5
3
0
107
Which operations did the student perform?
2R2+ R3 R3
2R3+-R3 R3
2R2+ R3 R2,R3
0.2R2 R3

Fiona joins a fruit of the month club. the entry cost was $25 and then she pays $18 per month. if she participates for 8 months, how much will she pay in all? how much in 10 months?

10 ! a train starts from grand city and travels toward belleville 388 miles away. at the same time, a train starts from belleville and runs at the rate of 47 miles per hour toward grand city. they pass each other 4 hours later. find the rate of the train from grand city.

Let hh represent the number of hummingbirds and ss represent the number of sunbirds that must pollinate the colony so it can survive until next year. 6h+4s > 746h+4s> 74 this year, 88 hummingbirds pollinated the colony. what is the least number of sunbirds that must pollinate the colony to ensure that it will survive until next year?