If the expression 4x+6 is equal to 34 for some value of x, then what is the value of 2x+5 equal to for the same value of x

Which shows the correct substitution of the values a,b and c from the equation 1=-2x+3x^2+1

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

Choose the more precise measurement. 26.4 cm or 8.39 cm