JoeNah, Dekobian and Evan wrote equations to calculate the amount of
money in a savings account after one year with 5% interest paid annually on
an investment of M dollars. Let B represent the balance of money saved.
JoeNah's Equation: B = 1.5M
Dekobian's Equation: B = M+ 0.05M
Evan's Equation: B = M(1+0.05)
The three students decided to see if their equations would give the same
answer by using a $100 balance. Find the total amount of money in the
savings account using each student's equation. Show your work.

see the explanation

Step-by-step explanation:

Let

B ---> the balance of money saved.

M ---> the amount invested in dollars

we have

JoeNah's Equation

For M=$100

substitute in the equation

Dekobian's Equation

For M=$100

substitute in the equation

Evan's Equation

For M=$100

substitute in the equation

In this problem

Dekobian's Equation and Evan's Equation are correct

the image is given below

since the options are not given so we draw it from the equation

the given equation is

y = (x-1) (x+4)

y = y² + 3x - 4

the above equation is a quadratic equation which will have two roots. if we draw the graph for it, it will look like this

my computer is slow i can not see it sorry