I would be able to but i left my maths book at school and that has the explanation in, sorry :(
You will need 6/4 or 1 1/2 cups of blueberries to make 48 muffins (2 dozen),
Y=7-2×(-5/2)
Y=7+5
Y=12
The answer is C
Opposite sides of angles are equal so
x+12=4x-48
12+48=4x-x
60=3x
x=60/3
x=20
