Just multpily.
8950*.76= 6820
so C is the answer
There are 2,500,000 pennies in $25,000
A = b is given to us
Multiply both sides by c to get
a = b
a*c = b*c
The rule to multiply both sides by c is the multiplicative property of equality
Then on the right side, replace c with d. This replacement is possible due to the fact that c = d. This is using the substitution property.
So we go from
a*c = b*c
to this
a*c = b*d
To work this out you need to do 80 - 64 - 4.16 = 11.48
he received $11.48 change
