Answer:
2/15
Step-by-step explanation:
Step 1: 4/5 x 1/2 = 2/5
Step 2: 2/5 x 1/3= 2/15
Hope this helped!
Answer:
Step-by-step explanation:
1. exponential because as the values increase by 1, the y values are multiplied by a factor of 1/2.
2. exponential growth because as the time increase by 20 minutes, the cell amount multiplies by 2.
Answer:
There are 12 students in each group
Step-by-step explanation:
87-39= 48
48/4= 12
Hope this helped. ;)
H(x) equals what? I think you've missed that detail. :)
Answer: ![(-\infty, -4]](https://tex.z-dn.net/?f=%28-%5Cinfty%2C%20-4%5D)
Curved parenthesis at negative infinity
Square bracket at -4
====================================================
Work Shown:

The last inequality shown above is the same as saying 
Converting this to interval notation leads to the final answer of ![(-\infty , -4]](https://tex.z-dn.net/?f=%28-%5Cinfty%20%2C%20-4%5D)
Note the use of a square bracket at -4 to include this endpoint. We can never include either infinity, so we always use a parenthesis for either infinity.