Answer:
wrong as his calculation was incorrect at initial level itself when he found the result of the division
Step-by-step explanation:
Andre said
3 ÷ 



but andre calculated it as



Hence his calculation was incorrect at initial level itself
Answer:
60x-80
Step-by-step explanation:
per hour is x and the fee is negative 80
Answer:
449.65
Step-by-step explanation:
391x.15=58.65
$58.65+$391= 449.65