Ricky bought three and a half pounds of oranges each pound cost $3.90 equations represents the total cost C Wiki paid for the oranges in the amount of money she spent

The equation representing the total cost C that Ricky paid for the oranges in the amount of money she spent is:

C = 3.90 * 3.5

where C is the total cost in dollars.

To find the total cost C that Ricky paid for the oranges, we can use the equation:

C = number of pounds * cost per pound

In this case, Ricky bought three and a half pounds of oranges, so the number of pounds is 3.5 and the cost per pound is $3.90.

Substitute these values into the equation:

C = 3.5 * $3.90

To calculate this, simply multiply the number of pounds by the cost per pound:

C = 12.5

Therefore, Ricky paid a total of $12.50 for the oranges.

To calculate the total cost C that Ricky paid for the oranges, we can use the equation:

C = P x W

Where:
C represents the total cost
P represents the price per pound
W represents the weight of oranges in pounds

In this case, Ricky bought 3 and a half pounds of oranges, which can be represented as 3.5 pounds. The price per pound is $3.90.

Substituting the values into the equation:

C = $3.90 x 3.5

Calculating the multiplication:

C = $13.65

Therefore, Ricky paid a total of $13.65 for the oranges.