17 because Caronline is twice as old as Sarah which makes Sarah 14 and Jacob is 3 years older then Sarah
For this case, the first thing we must do is define variables.
We have then:
x: number of years of Joan y: number of years of ellen We now write the system of equations:

Solving the system we have:

So that Joan is 21 years old then:
Answer: joan will be 21 years old in 12 years
Answer:I DON'T KNOW
Step-by-step explanation:
Answer:

Step-by-step explanation:
Define the function y(t) to be x(t) delayed by 0.3 seconds.
To interpret that we can say that y at time t take the value of x at time (t+0.3s).
So we can write

The graph relates X(t) and Y(t) for t=0.3 to t=4.0. There is a linear relation between the X and Y because the slope Y/X is a constant.
Answer:
The answer is B
Step-by-step explanation:
hope this helps