Sagot :
Answer:
Let x=Helen's age
y=her father's age
Solution :
x=13
y=2x+4
Substitute the value of x to find her father's age
y=2x+4
y=2(13)+4
y=26+4
y=30
Helen's father is 30 years old
~hope it helps ^-^
Answer:
Let x=Helen's age
y=her father's age
Solution :
x=13
y=2x+4
Substitute the value of x to find her father's age
y=2x+4
y=2(13)+4
y=26+4
y=30
Helen's father is 30 years old
~hope it helps ^-^