Answer:
Quadratic formula is in the 2nd picture.
Step-by-step explanation:
Answers in the photo.
Solve the equation for r by finding a,b, and c of the quadratic then applying the quadratic formula.
Answer:
x>4
Step-by-step explanation:
because x is greater than 4
A is the answer to your question
Answer:
81 and 91
Step-by-step explanation: