Multiply both 711.9 and 8.4 by 10 which will remove the decimal point.
and make the calculation much more easier
the required answer would be 84.75
The value of price (p) at a point of equilibrium is 13.4. Then the correct option is C.
<h3>What is the linear system?</h3>
A Linear system is a system in which the degree of the variable in the equation is one. It may contain one, two, or more than two variables.
The equation of the demand (D) and supply (S) is given below.

Where p is price.
At equilibrium, we have
D = S
Then

More about the linear system link is given below.
brainly.com/question/20379472
1l=1000=>x l=29000000=>x=29000000:1000=>x=29000
Answer:
QR & ST ---> Parallel
ST & QS ---> Perpendicular
RT & QR ---> Perpendicular
QS & RT ---> Parallel
Step-by-step explanation:
2 lines are said to be parallel lines if they will never intersect with each other.
2 lines are said to be perpendicular lines if angle between both the lines are 90°.