i don’t understand what it is asking so i need with the work

$0.72

Step-by-step explanation:

The question is asking for how much an original unknown value changed. To find this we add all the changes positive or negative to find the value of the change over the entire week, the equation is 0.58-1.02-0.93+2.39-0.3=0.72

38.5

step-by-step explanation:

lets say, first number = r

second number = 3r+7

total = 49

(r)+(3r+7)= 49

4r+7 = 49

4r = 42

r = 42/4

r= 10.5

3r+7 = 3(10.5)+7 = 38.5

hope this