Aquantity b varies jointly with c and d and inversely with e. when b is 18, c is 4, d is 9, and e is 6. what is the constant of variation?
1/12
1/3
3
12

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

Which of the following exponentially equations is equivalent to the logarithmic equation below?

Similarly fie each expression 18,19,20