Write answer in standard form and the steps please
(-3x^4÷x^6-9x^5+2x^2-7)+(-2x^5+x- 4x^2-x​

Me figure out the process to determine x you appreciate it : )

What is the value of y? round to the nearest tenth

Someone this asap for a group of students attends a basketball game. * the group buys x hot dogs at the concession stand for $2 each. * the group buys y drinks at the concession stand for $3 each. the group buys 29 items at the concession stand for a total of $70. how many hot dogs did the group buy?