Answer:
41.
No, Amits reasoning is not correct. The problem used to represent the equation, (-5.75) × 7, was solved incorrectly. (-5.75) × 7 = (-40.25). We know this because a negative number times a positive number is always a negative number. So the correct answer for the change in Amits bank account is -40.25
47.
a- Ivan's expression: $4.25 + $1.25(m)
Vicky's expression: $5.75 + $0.75(m)
b- $4.25 + $1.25(m) + $5.75 + $0.75(m)
[add $4.25 + $5.75]
$10.00 + $1.25(m) + $0.75(m)
[add $1.25(m) + $0.75(m)]
$10.00 + $2.00(m)
c- $10.00 + $2.00(m)
d- $10.00 + $2.00(m)
[2 ÷ 2 = 1]
[10 ÷ 2 = 5]
e- 2(m + 5)