-2+2=0 because on the number line -2 is two spots from 0 then when u add a positive 2 it equals 0.
A=-10 all you do to find a is simply add 2 to both sides of the equal sign
S = 7x^2....divide both sides by 7
1/7s (same as s/7) = x^2...now take sqrt of both sides
(+ - ) sqrt 1/7s = x
You have to add then multiply to get how many days
Answer:
4185
Step-by-step explanation:
A culture of bacteria grows exponentially according to the following general exponential growth function;
where;
p(t) is the population at any given time t.
p(0) is the initial population
k is the growth constant
From the information given we have;
p(0) = 1500
at t = 5, p(t) = 2300; p(5) = 2300
We shall use this information to determine the value of k;

Divide both sides by 1500;

Therefore, the population of the bacteria at any time t is given by;
