60% of what number is 18?

10.8
30
0.3
108

(ik they easy but hey al least you getting points thx for btw)

Abacteria population is tripling every hour. by what factor does the population change in 1/2 hour? select all that apply

Non-euclidean geometry was discovered when, in seeking cleaner alternatives to the fifth postulate, it was found that the negation could also be true a. true b.false

Given sin∅ = 1/3 and 0 < ∅ < π/2 ; find tan2∅ a. (4√2)/9 b. 9/7 c. (4√2)/7 d.7/9