ASAP Please answer. Three students sit in the first row. In the second row, 3 students sit behind each of those students, and so on. Write an expression with exponents to show how many students sit in the third row? How many total students are seated?

3^x. 39

Step-by-step explanation:

To find the expression, we know the first row is 3 and the next row is 9. So the pattern is multiply by 3. That means the expression is 3^x. Following that, we know the third row is 27. 3 + 9 + 27 = 39

70

step-by-step explanation:

2*5=10

4*15=60

60+10=

70

yes the total will be same because in both of them the expression.is rearranged but their sign remains the same hence it hss just been shuffled