Answer:
-20
Step-by-step explanation:
y = 4x + b
-4 = 4(7) + b
-32 = b
y = 4x -32
r = 4(3) - 32
r = -20
He spent a total of $48.30 bc his tip is 15% of $42 which is $6.30 so $42+$6.30 is $48.30
Answer:
A C AND D
Step-by-step explanation:
Answer:
The price for 12 muffins is $10.00