The temperature increased 7 degrees fahrenheit between 6 a. m and 3 p. m was 66 degrees fahrenheit. what was the temperature at 6 a. m?

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