Answer:
-8a^2 + 9a
or
9a - 8a^2
the answer is c
Step-by-step explanation:
Answer:

Step-by-step explanation:
c varies jointly with d and the square of g


where, k is constant of proportionality.
Put the given value c = 30 when d = 15 and g = 2 and find out k


If c = 6 and g = 8 then d = ?



Hence, The value of d is 
A ∩ B = {2, 4} [intersection (∩) means the common terms]
Answer:
28 pizzas eaten
Step-by-step explanation:
1) estimate each number, i will take 3 1/4 as 3
5 3/4 as 6
and
2 3/4 as 3
2) combine the total number of pizzas left over:
3+6+3=12
subtract the number of pizzas left over from the total ordered:
40-12=28