Can someone ? i'm super confused on how to solve it when a decimal is in the

#12 and #13

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

If there are 3.281 feet in 1 meter, how many inches are in one centimeter

What is the approximate value of  q  in the equation below? –1.613–1.5220.5853.079