Answer:
she gave away 4
Step-by-step explanation:
p = 16-12 = 4
y = (7/4)x + 3
(isolate the y variable by moving 7x) 4y = 7x + 12
(divide by 4 to get y by itself) y = (7/4)x + 3
Multiply both sides by 3/4.
(3/4)(4/3)x = (3/4)8
x = 6