A bag contains blue marbles and red marbles, 62 in total. The number of blue marbles is 6 less than 3 times the number of red marbles. How many blue marbles are there?

Write a corresponding real world problem to represent 2x - 125=400

How to find the exponential function y=ca^x, with points (1,2) and (2,1)

When george started his current job, his employer told him that at the end of the first year, he would receive two vacation days. after each year worked, his number of vacation days will double up to five work weeks (25days) of payed vacation. how many vacation days will he have in 4 years