2x - 5yz this is the answer for apex (^-^)
The unit rate is 2.5 pounds a week.
15/6 = 2.5
I hope this helps.
So firstly, you want to foil - (7v^4 + 6) [Think of the minus sign as -1]: 
Next, combine like terms and your answer will be: 
Answer:
A
Step-by-step explanation:
Given
3
When the culture was created t = 0, thus
3
= 3 × 1 = 3
That is there were initially 3 bacteria in the culture → A