Question

yuji is baking cookies for a fundraiser. yuji starts off the day with 9 batches of cookies already prepared. then throughout the day he bakes at a constant rate of 4 batches per hour. by the end of the day, yuji has 21 batches ready for the fundraiser. what equation can be used to represent the amount of time yuji spends baking today? represent the time in hours as the variable x. show your work here

Explanation:

Step1: Identify initial and rate

Initial batches: 9. Rate: 4 batches/hour. Time: \( x \) hours.

Step2: Formulate total batches

Total batches = Initial + (Rate × Time). So, \( 9 + 4x = 21 \).

Answer:

The equation is \( 9 + 4x = 21 \)