For a science project, Sammy observed a chipmunk and a
squirrel stashing acorns in holes. The chipmunk hid 3 acorns in
each of the holes it dug. The squirrel hid 4 acorns in each of
the holes it dug. They each hid the same number of acorns,
although the squirrel needed 4 fewer holes.
How many acorns did the chipmunk hide?

let soccer = x and golf = y

part a

1st equation: x + y = 125

2nd equation: x = y +45

part b

replace x in the 1st equation with the 2nd one:

y + 45 + y = 125

simplify:

2y + 45 = 125

subtract 45 from each side:

2y = 80

divide both sides by 2:

y = 80/2

y = 40

she plays golf for 40 minutes.

part c

no because she plays soccer for 45 minutes longer than golf 40 +45 =   85 minutes, not 80 minutes.

the entire expression should be subtracted from 30. to subtract the quantity, distribute the negative sign, which changes the signs on the terms. so, the –2 changes to positive and gets added to 30 instead of subtracted from it.

hope this ! ^w^

the correct answer is d

hope this