We actually need the choices but oh well, we can simpify and hopefuly it is one of the choices
remember the distributive property
a(b+c)=ab+ac
so
7(p+2n)+n
distribute first
7(p)+7(2n)+n
7p+14n+n
7p+15n is an equivilent expression
The amount of medicine in the bloodstream decreases by 25% each hour.
<h3>Exponential equation</h3>
The standard exponential equation is expressed as:
y = ab^x
a is the initial amount
b is the rate
If b < 1, hence there is a declince
Given the expoenentia equation A(h)=600(0.75)^h,
b = 1 - r = 0.75
r = 1 - 0.75
r = 0.25
This shows that the amount of medicine in the bloodstream decreases by 25% each hour.
Learn more on exponential equation here: brainly.com/question/12940982
Part A
c - number of washed cars
Answer: 400 + 5c > 900
Part B
400 + 5c > 900 | - 400
400 + 5c - 400 > 900 - 400
5c > 500 | : 5
5c : 5 > 500 : 5
c > 100
Answer: 100 cars
Answer:
short
Step-by-step explanation:
We can use population formula
we are given
interest rate is 1.5% per day
so,
now, we can plug values
we are given
P(t)=2Po
we can plug it
we can solve for t
so,
number of days is 46.5..........Answer
