The answer is D............
Answer:
8x^2 + 5y + 1
Step-by-step explanation:
1 + x^2 - 3 + 2y + 7x^2 + 3 + 3y
group like terms
= x^2 + 7x^2 + 2y + 3y + 1 - 3 + 3
add similar items
= 8x^2 + 2y + 3y + 1 - 3 + 3
add similar items
= 8x^2 + 5y + 1 - 3 + 3
= 8x^2 + 5y + 1
a) n (No. of peoples) = 50
r (No. of prizes) = 3
p(n,r) = p (50,3)

b) n(No. of players)=14
r (No. of players for Batting)=9

c)n(Total applicants)=30
r(tester positions)=4