Answer :
To convert from Fahrenheit to Celsius, the conversion formula is given by
[tex]$$
C = \frac{5}{9} (F - 32).
$$[/tex]
Barbara starts with [tex]$78^\circ F$[/tex] and subtracts 32:
[tex]$$
78 - 32 = 46.
$$[/tex]
The next step is to multiply this result by [tex]$\frac{5}{9}$[/tex]:
[tex]$$
C = \frac{5}{9} \times 46.
$$[/tex]
This multiplication converts the remaining value to degrees Celsius. Thus, the correct next step is to multiply 46 by [tex]$\frac{5}{9}$[/tex].
[tex]$$
C = \frac{5}{9} (F - 32).
$$[/tex]
Barbara starts with [tex]$78^\circ F$[/tex] and subtracts 32:
[tex]$$
78 - 32 = 46.
$$[/tex]
The next step is to multiply this result by [tex]$\frac{5}{9}$[/tex]:
[tex]$$
C = \frac{5}{9} \times 46.
$$[/tex]
This multiplication converts the remaining value to degrees Celsius. Thus, the correct next step is to multiply 46 by [tex]$\frac{5}{9}$[/tex].