Answer: 
Step-by-step explanation:
You have the equation
.
Then, to solve for the variable
from the equation you need:
Make the subtraction of the right side of the equation:
(As the denominators are 1 and
, the least common denominator is
)

Multiply
to both sides:

Add
to both sides:

And finally divide both sides by
:

Answer:
x = 1 and x = -3
Step-by-step explanation:
roots are points that y = 0
in two points we have this
x = 1 and x = -3
Answer: should be A: 1.75 hours
Step-by-step explanation: divide 28/16 to give you 7/4, then you should turn this into a decimal which gives you 1.75