Owen has 12 Cubs baseball cards. This is 40% of his card collection. How many cards does he have in his collection?

30 cards

Step-by-step explanation:

12 is 36% of 30. we round the 36% to 40% since one card is wroth more than 4%.

10a^3+277a^2-132a-792

step-by-step explanation:

(2a+11)(5a-12)(foil)

=10a^2-24a+55a-132 =10a^2+31a-132

(10a^2+31a-132)(a+6)

=10a^3+60a^2+31a^2+186a^2-132a-792 =10a^3+277a^2-132a-792

i hope this is what you are looking for : )