What is the answer? i don’t understand

The first thing you want to do is find out what the sqrt(7) is. Use your calculator to do this. Most calculators do it this way

7

^ or y^x or x^y or some calculators do it with a √ key see below.

0.5

=

You should get 2.64 something. If your calculator has a √ key you do it as

√

=

Regardless of that, the answer you should get is 2.64. The friend certainly did not do that. A and C are both wrong for the same reason.

What the friend did was divide by 2. So the right answer is B.

i would need to see the shape

step-by-step explanation:

answer-

the equation that models this pattern is

solution-

a researcher placed a petri dish with 32,000 bacterial cells. one hour after being placed in the vacuum chamber, the number of cells in the petri dish had halved. another hour later, the number of cells had again halved.

this can be represented as exponential decreasing function,

where,

putting the values,

y-intercept means, where x=0, so

the coordinate of this poin will be (0, 32000)

this means when x=0 or at the starting of the research, the number of bacteria cells was 32000.

after 3 hours, number of bacteria cells will be,

the   coordinate of this point will be (3, 4000)