Answer:
35
Step-by-step explanation:
20% * x = 7
20/100 * x= 7
x = 7 *100/20 (7*100÷20)
Answer:
768 bugs
Step-by-step explanation:
You can rewrite this problem as a function as time where the bug population is f(x), and x is the number of days since the start.
f(x)=6*2^(x/5)
Here, the 6 represents the number of bugs that you start with, the two shows that they double every day, and the /5 shows that they double every 5 days.
By plugging in 35, you get 6*2^7, which is 768.
Since the order of selection does not matter, we will use combinations to solve this problem.
We are to form the combination of 30 objects taken 6 at a time. This can be expressed as 30C6.

This means the six teachers can be selected in 593775 ways.
So the correct answer is option A
5 x 3 = 15 is this correct
Answer:
20
Step-by-step explanation:
10+10+10+10=40
40/2=20