Answer:
and 
Step-by-step explanation:
Options

Required
Select the unit rates
Unit rate involve two items where the first item being measured can be any positive number, but the second item must be measured in units (i.e. 1)
For clarity:
If
represents unit rate, then 
Having said that:
Only
and
satisfy the condition of unit rates; others are not because they have a denominator other than 1
Answer:
It will be worth 16k in 10 years
Step-by-step explanation:
divide 20k by 100
1% = 200 dollars
200 x 8 gives you 1.6k
1.6k x 10 = 16k
Minus 6 both sides
4>x/3
times3 both sides
12>x
Answer:
Step-by-step explanation:
25x^2-64=0
x=8/5, -8/5
Answer:
YZ=16
Step-by-step explanation:
Because they are parallel