Answer:
Step-by-step explanation:
Total number of students = 15
Time given to each student to present their item= 3 minutes
So, total time for the show can be calculated as minutes
Answer: (7x - 4)(7x - 4) = 49x^2 - 28x - 28x + 16 = 49x^2 - 56x + 16
its b .
A