This is very !

1. multiply 7/5 and -5/4 answer as an improper fraction in simplest form

2. multiply -2 1/2 and -3 1/3

3. divide -24 and 7 answer as a mixed number in simplest form

4. over 25.5 days, a pond's water level changed by an average of −0.32−0.32 centimeter each day.
what was the total change in the water level?

5. multiply -1.2 and 0.4

6. timothy recorded the monthly change in his savings account balance, in dollars, for 8 months.
month- january february march april may june july august

dollars- −30 −15 55 40 −20 −45 −10 65
what is timothy's average monthly savings account balance?

7. divide -3/8 and -6/7

8. jerry measured and timed the descent of a diving bell spider in a large fish tank. the spider reached a position 4 1/2 inches below the surface of the water after descending at a constant rate for 1 1/2 seconds. jerry recorded this as −4 1/2 inches.
what is the position of the spider relative to the surface after 1 second?

9. divide 5 1/4 and -2 1/2 answer it as a mixed number in simplest form

10. miko’s restaurant bill was $16. she used the expression 1.18(16) to find the total cost including an 18% tip.

what expression is equivalent to the amount miko paid?

a) 16 + 1.18
b) 1 + 1.18(16)
c) (16 + 0.18)16
d) 16 + 0.18(16)

if you get 2 or less wrong then i will give you brainliest. you will get 25 points. answer in the next 10 !