I had the similar test and got it right so it should be B
She can make two cakes and 3 trays of cookies
So first you would need to FOIL the problem (first-outer-inner-last) so you would multiply x by x and get {x²} then you would multiply x by 1 so you would get just plain {x} then multiply 2 by x so to get {2x} then multiply the last terms 2 and 1 together to get {2} so then put it all together = x² + x + 2x + 2 then you add like terms together so you end up with = x² + 3x + 2 as the answer
Puppies = 4 feet
Parrots = 2 feet
15 heads = 15 animals
Assumed all Parrots,
15 x 2 = 30 feet
50 - 30 = 20
There are 20 extra feet which must belong to puppies' extra 2 feet each
20 ÷ 2 = 10
There are 10 puppies
15 - 10 = 5
There are 5 parrots
Check:
10 x 4 + 5 x 2 = 50 feet (Correct)
Answer: A
Step-by-step explanation:
Y= - 5x + 10
That's the answer I believe