Im really confused and i need help asap

The table shows a pattern of exponents. what is the pattern as the exponents decrease?

The sales totals at macy's food store have increased exponentially over the months. which of these best shows the sales in the first three months?

Find the least common multiple of the expressions: 1. 3x^2, 6x - 18 2. 5x, 5x(x +2) 3. x^2 - 9, x + 3 4. x^2 - 3x - 10, x + 2 explain if possible