15 PTS (WILL GIVE BRAINLIST)

Step-by-step explanation:

Transform System A to system B

option c

Transform System B to system C

option b

2x - 4y = -10          A1

-8x + 7y = 22        A2

A1 * 4   > 8x - 16y = - 40

A2        > -8x + 7y = 22       {Add }

                         -9y       = -18      B2

B2 ÷ (-9)      y = 2

i think it would be 42cm

10.416 meters per second

step-by-step explanation:

distance=1 00 meters

time= 9.6 seconds in decimal form or 9 3/5 as a mixed number

average speed= 100/9.6

=10.416 meters per second or 10 52/125 as a mixed number.