Answer:
10.4
Step-by-step explanation:
Let the number be x
Sum of x and -3.2 : x + (-3.2) = x - 3.2
1/4 times the sum of a number and −3.2 = (1/4) * (x - 3.2)

x = 10.4
The price changed by $42 over the course of seven weeks
Dana can fill 12 planters. Let me know if you want an explanation!
A triangle? Hope this helps! Can I have brainiest? <3