Select the expression equivalent to (2.1x+4.3)−(−3x−7). A −0.9x−2.7
B −0.9x+11.3
C 5.1x−2.7
D 5.1x+11.3

In trapezoid klmn, kj=19.2 and jm=22.5. identify ln.

The graph shows the distance kerri drives on a trip. what is kerri's speed?

Lizette is training for a marathon. at 7: 00 she left her house and ran until 8: 30, then she walked until 11: 30. she covered a total distance of 18 miles. her running speed was six miles per hour faster than her walking speed. find her running and walking speeds in miles per hour.