Final answer:
When evaluating the expression (14x15 - y²) / 5 with y set as 10, the result is 22. This does not match any of the provided options (a) 40, b) 56, c) 60, or d) 64, suggesting an error in the question's options.
Step-by-step explanation:
The student asked for the result of evaluating the expression (14x15 - y²) / 5 when y = 10. To solve this, first substitute the value of y into the expression: (14*15 - 10²) / 5. Now, calculate the expression step by step: Multiply 14 by 15 to get 210. Calculate 10 squared, which is 100. Subtract 100 from 210 to get 110. Finally, divide 110 by 5 to get 22. The result is 22, which is not one of the options provided in the question. Thus, it seems there might have been a misunderstanding or an error in the question's options. To evaluate the expression (14x15 - y²) / 5 when y = 10, we substitute y = 10 into the expression: (14x15 - 10²) / 5 = (14x15 - 100) / 5 = (210 - 100) / 5 = 110 / 5 = 22. Therefore, the result is 22, which is not one of the given options. Hence, none of the options (a) 40, b) 56, c) 60, or d) 64 is correct.