Pls pls
how do i do,
1. long division using place value.
2. add, subtract, multiply & divide fractions.
3. divide mixed numbers.
4. use volume formula to calculate
the volume of a rectangular prism.
5. use the unit cubes method to calculate
the volume of a rectangular prism.
again pls im desperate

Sole with work in 10 years, the average number of hours of tv watched per week by teenagers dropped from 23.9 to 21.4. find the percent of change.

Joel wants to buy a new tablet computer fram a store having a 20% off sale on all tablets. the tablet he wants has an original cost of $190. he also wants to make sure he has enough money to pay the 5% sales tax. part one joel uses the incorect expression 0.95(190)(0.8) to calculate that the tablet will cost him a total of $144.40. describe his error and write the correct expression part two how much will joel pay for the tablet show your work if you answer this question correctly you will receive a prize of 99 points good luck

Vertical angles must check all that apply