Given the system of linear equations.

part a: use substitution to find the solution to the systems of equations. include all of your work in your final answer.

part b: algebraically verify your answer to part a. include all of your work in your final answer.
part c: graphically verify your answer to part a. in your final answer, include the graph.
{x - y = 5
{4x + y = 10
! 11 points

Need on this one asap im almost done with this subject

Trent wants to buy 2 packs of trading cards for 3 dollars each. the trading card packs that trent normally buys tend to come in packs of 6, 10, 12, or 15 cards. after selecting 2 packs, trent found that the first pack of cards cost 25 cents per card, and the second pack cost 30 cents per card. trent uses this information to write the equations below in order to compare c, the number of cards in each pack.

Television sizes are based on the length of the diagonal of the television's rectangular screen. so, for example, a 70-inch television is a television having a diagonal screen length of 70 inches. if a 70 inch television's diagonal forms a 29°angle with the base of the screen, what is the vertical height (1) of the screen to the nearest inch? 70 inhin