Respuesta :
Answer:
70 years
Step-by-step explanation:
Equation that describe the situation
y = 4x + 720
x = years
y = length
1000 = 4x + 720
4x = 280
x = 70
Answer:
70 years
Step-by-step explanation:
Equation that describe the situation
y = 4x + 720
x = years
y = length
1000 = 4x + 720
4x = 280
x = 70