Respuesta :
Answer:
Step-by-step explanation:
1 is y = 15x, in 9 years he will have saved $13,500
2 is x2 − 4x − 211 is y = 15x, in 9 years he will have saved $13,500
2 is x2 − 4x − 21
1 is y = 15x in 9 years he will have saved $13,500