Answer:
50%
Step-by-step explanation:
12500 - 7500 = 5000
5000/100 = 50%
for the value of x is to factor the quadratic, set each factor equal to zero, and then solve each factor.
So we need to solve:

First is important to note that both terms on the left side of the equation have a common factor because they are both divided by y. Then:

Then:

So the solution is y=6. Then option A is correct and you need to write the 6 between the symbols { }.
Answer:
(a) 65318400
(b) 1080
(c) 311040
Step-by-step explanation:
I think you forgot to put the questions
(a) if the programmes can be perfomed in any order ?
(b) if the programmes of the same kind were perfomed at a stretch?
(c) if the programmes of the same kind were perfomed at a strech and considering the order of performance of the programmes of the same kind?
if you need the step by step solutions, visit
https://brainly.in/textbook-solutions/q-20-school-annual-day-function-variety-programme-3#q-20-school-annual-day-function-variety-programme-2
7 + 2(x - 3) + 5x
= 7 + 2x - 6 + 5x <em>distributed 2 into x - 3</em>
= 7 - 6 + 2x + 5x <em>grouped like terms together</em>
= 1 + 7x
You didn't provide an image of the steps but hopefully you can figure it out based on the information I provided.