Which of the following is a function? A.) {(-2, -4/5), (-1,-1),(0,0),(-1,-1)} B.) {(-2,0),(0,1/2),(0,3/4),(1,1)} C.) {(-2,1),(-1
Orlov [11]
Answer:
D.
Step-by-step explanation:
A function, by the easy-to-understand definition, is a relation where no x values are shared. The only set where each x value is different is in D. All the other sets share the same x value. Example: Set C has coordinates (-2, 1) and (-2, 2). The x coordinates are the same, so this isn't a function. It is only a relation.
The exponential function is often used to model the growth or decay of a population
The population size of the yeast cell after 3 hours is 6.24 million
The given parameters are:
a = 3.1M --- initial number of cells
r = 0.4425 per hour --- rate
The nth term of an exponential function is:
f(n) = a(1+r)^n-1
After 3 hours; n = 3
So, we have:
f(3) = a(1+r)^3-1
Substitute values for a and r
f(3) = 3.1 (1+0.4425)^3-1
f(3) = 3.1 ( 1.4425)^2
f(3) = 6.24
Hence, the population size of the yeast cell after 3 hours is 6.24 million.
Read more about exponential functions at: brainly.com/question/3127939
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Answer:
8 hours
Step-by-step explanation:
Let x = the hours she work
Equation-
1. 20x + 12 = 172
2. - 12 - 12
20x = 160
3. /20 /20
4. x= 8 hours
1. Write out the equation
2. subtract 12 from both sides
3. Divide 20 on both sides
4. Your answer is 8 hours
<h2>
There are infinite solution of y.</h2>
Step-by-step explanation:
Given,
y = 
- 10x + 25
To find, the total number of solutions = ?
∴ y = - 10x + 25
⇒ y = - 2(x)(5) + 
⇒ y = 
There are infinite solution of y.
Thus, there are infinite solution of y.
