Final answer:
To find the number of toys, we can set the cost equal to $19.50 and solve for T.
Step-by-step explanation:
To write an equation that is equal to a total of $19.50, we can set the expression C = 12 + 0.75T equal to $19.50 and solve for T.
12 + 0.75T = 19.50
Subtract 12 from both sides:
0.75T = 7.50
Divide both sides by 0.75:
T = 10
So, the equation that represents a total cost of $19.50 is T = 10.