You are ordering a meal and have $15 to spend on. the restaurant charges 6% sales tax and you plan to leave a 15% tip. the equation c= x+0.06x+0.15x gives the total cost c of your meal, where x is the cost before tax and tip. what is the maximum amount you can spend before tax and tip?

How do i do this activity, is appreciated

At the olympic games, many events have several rounds of competition. one of these events is the men's 100-meter backstroke. the upper dot plot shows the times (in seconds) of the top 8 finishers in the final round of the 2012 olympics. the lower dot plot shows the times of the same 8 swimmers, but in the semifinal round. which pieces of information can be gathered from these dot plots? (remember that lower swim times are faster.) choose all answers that apply: a: the swimmers had faster times on average in the final round. b: the times in the final round vary noticeably more than the times in the semifinal round. c: none of the above.

Last one and the bottom answer choice is y=(x-4)^2+1 you guys!