Pleaze help just multiply and divide Multiplying and Dividing Rational Numbers

1. (-1) x 12
2. (-0.5) x 16
3. 24 ÷(−6)
4. (−15) ÷0.3
5. (−4) ÷(−20)
6. (-2) x (-6)
7. (-2.1) x (-2)
8. (-10) x (3.2) x (-7.3)
9. 15 ÷(−12)
10. 12 x (-13)

(least common multiples) the answer that i had in the 1st step was lcm of airline tickets sold=72. idk if that even matters but just in case. ! three co-workers are busy selling airline tickets over the phone. in an 8-hour day, charles can sell 8 airline tickets, ann can sell 9 airline tickets, and michelle can sell 6 airline tickets. step 2 of 2: what is the smallest number of 8-hour days needed for each of them to achieve the same number of sales? it takes charles . it takes . it takes .

The weight v of an object on venus varies directly with its weight e on earth. a person weighing 120 lb on earth would weigh 106 lb on venus. how much would a person weighing 150 lb on earth weigh on venus?

What percent of 18 is 24? and plz explain thx.