Question 3 of 10 Which of the following best describes the graph below? +2 54 -3 -2 -1 1 O A. It is a one-to-one function. O B. It is a function, but it is not one-to-one. O C. It is not a function. D. It is a many-to-one function.​

It is a one-to-one function

one to one function

Step-by-step explanation:

Hello there!

If W is the age of Wilma, J the age of Jamal and T the age of Tim, we get:

W = 2J

J - T = 3

J + W + T = 17

And we want to find the age of Jamal.

First, we could replace W using the first equation, and T using the second equation.

By the first equation, we know that W = 2J and whit the second equation we have that T = J + 3, now we can replace this in the third equation and isolate J.

J + W + T = 17

J + 2J + J + 3 = 17

4J = 17 - 3

J = 14/4 = 3.5

So Jamal has 3.5 years.

Second question:  

the sum of two consecutive integers is 183. what is the smaller integer?

two consecutive numbers can be written as N and (N + 1)

then:

N + (N+1) = 183

2N + 1 = 183

2N = 183 - 1 = 182

N = 182/2 = 91