The regular price of a child's entry ticket to a water park is $6 less than that for an adult's. the park offers half off all entry tickets during the off-peak season. the sandlers paid a total of $78 for 1 adult ticket and 2 child's tickets to the water park during the off-peak season. the following equation represents this situation, where x represents the regular price of an adult ticket:
78 = 1/2x + (x − 6)
what is the regular price of a child's ticket?
$50
$56
$75
$81

Luke started a weight-loss program. the first week, he lost x pounds. the second week, he lost pounds less than times the pounds he lost the first week. the third week, he lost 1 pound more than of the pounds he lost the first week. liam started a weight-loss program when luke did. the first week, he lost 1 pound less than times the pounds luke lost the first week. the second week, he lost 4 pounds less than times the pounds luke lost the first week. the third week, he lost pound more than times the pounds luke lost the first week.

Simplify using positive exponents only.

X-10/4 when x = –18 a 7 b –2 c –7 d 2