The value of which of these expressions is closest to e?
a. (1+1/20)^20. b. (1+1/21)^21. c. (1+1/22)^22 d. (1+1/19)^19

49xy +34y - 72z. determine the degree of the polynomial

[15 points]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

Simplify this expression. 8x 16(x + y)