Easy math question which of the following sets is closed under multiplication? a) {0, 1, 2, 4} b) {0, 1} c) {1, 2} d) none of the sets are closed under multiplication.

Jayne is studying urban planning and finds that her town is decreasing in population by 3% each year. the population of her town is changing by a constant rate. true or false?

Solve 2 - 3 cos x = 5 + 3 cos x for 0° ≤ x ≤ 180° a. 150° b. 30° c. 60° d. 120°

Arational number that is equivalent to -20/4?