Answer:
We can write an equation to represent the relationship between the cost of the manicure and the tip amount.
We know that the tip amount was $4.90 and it was 14% of the cost of the manicure. We can use this information to write the following equation:
0.14b = 4.90
In this equation, "b" represents the cost of the manicure.
To solve for "b", we can divide both sides of the equation by 0.14:
b = 4.90 / 0.14
b ≈ $35
Therefore, the cost of the manicure was approximately $35. The equation is 0.14b = 4.90.
Step-by-step explanation: