Answer:
Do you mean how many waves of sound and light went through the galaxy
0.225, 23%, 1/4
Step my step
23% = 0.23
1/4 = 0.25
Find what the sum of the #s could be by multiplying 15*4 since there's 4 #s . 15*4=60 so the sum of the 4 #s is 60
1345 - (-853) = D) 2198.
Simplify your brackets to get: 1345 + 853 and then add which will get you your answer, 2198.
