Answer:
A=40
B=.625
Step-by-step explanation:
1.25/.25 is 5
1/.25 is 4
.5/.25 is 2
5 x 4 x 2 is 40
multiply all of the sides together
or
multiply the boxes sides together then x 40
k = 20
1) Isolate the variable
k - 8 = 12
+8 +8
2) Solve
k = 12+8
7 yards
sqrt(49)=7