Write and evaluate the expression. Then, complete the statements. nine more than the product of seven and a number decreased by three The expression to model the situation is
1. 3 - 9(7n)
2. 9 + 7/n - 3
3. 9 + (7 + n) - 3
4. 9 + 7n - 3 .

The value of the expression when n = 8 is
1. 6 7/8
2. 71
3. 62
4. 501

Me complete this proof! prove that a quadrilateral is a square. me with the steps for this proof.

What are the solutions of the equation? 5z^2 + 9z - 2 = 0 a. 1, -2 b. 1, 2 c. 1/5, -2 d. 1/5, 2

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