Answer:
4,000,000,000,000
Step-by-step explanation:
Make it look like this first:

You get:

Which is 4,000,000,000,000
29.9, 30.0,30.1,30.5,30.7,30.08,31.0,31.0
the number of data is 8 elements so the medium will be the 3rd and 4th number
so the medium is 30.5 and 30.7
15 divided by 3 = 5 equal groups
Answer:
a)x=5 b)x=4
Step-by-step explanation:
a)9.5×2=19
3x+4=19
19-4=15
15÷3=5
x=5
b)5×3=15
7+2x=15
15-7=8
8÷2=4
x=4
hope this helps