Answer:
B 8.42 seconds
Step-by-step explanation:
421 in 50 seconds
421//50
8.42 seconds
Hope this helps!
you got this i believe in you!
Plug in D:
-4(1)^2 + 15(1)^2/5
-4 + 15 / 5
-4 + 3 = -1
Answer: 3/8ths
Step-by-step explanation: 1/8+1/8+1/8=3/8