Answer:
(3 , 2.5)
Step-by-step explanation:
.5x + y = 4
y = .5x+1
.5x + (.5x + 1) = 4
x + 1 = 4
x = 3
y = .5(3)+1
y = 1.5 + 1
y = 2.5
If you want to know what b is then it is 16
38 + b = 54
54- 38 = 16
38 + 16= 54
20+5 because 5 is 15 less than 25.