Joe bought g: gallons of gasoline for $2.85 per gallon and c: cans for oil for 3.15 dollars.

part a: what expression can be used go determine the total amount joe spent on gasoline and oil?

part b: if he bought 8.4 gallons of gasoline and 6 cans of oil, how much will he have spent in all?

! you : d

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

Extra points! find the missing dimension! need asap

Given that y varies directly to the square root of (x + 1), and that y = 1 when x = 8,(a)express y in terms of .x,(b)find the value of y when x = 3,(c)find the value of x when y = 5.