Answer:
1.5
# of postcards per day
and 9
Hope this helps!
7 + 8x
Step-by-step explanation:
y =-3x + x + 9
Find y when x = 2
Substitute the value of x= 2 into the equation
y = -3(2) + 2 + 9
y = - 6 + 2 + 9
y = -4 + 9
y = 5
The answer is 5
