The answer is a i believe
Answer:
D
Step-by-step explanation:
If you multiply 3 and 7 you are saying she worked 21 hours when she only worked a total of 10 hours.
Answer:
and

Step-by-step explanation:
To solve the equation,
, using the quadratic formula,
Recall: quadratic formula = 
Where,
a = 1
b = -14
c = 22
Plug in your values into the formula and solve:







And



