How many terms are in the geometric series 2.1 + 10.5 + … + 820,312.5?

Apositive number a or the same number a increased by 50% and then decreased by 50% of the result?

Solve the inequality and graph 6j - 7 < 5

Abag of jelly beans contain 13 pink, green, 20 yellow, 10 black, 7 red, and 11 orange jelly beans. approximately what percent of the jelly beans are pink and yellow?