Alex's work for the following quiz problem is as follows: Is Alex correct? if it's incorrect, what is the correct solution?

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?

Hi, can anyone show me how to do this problem? 100 points for this. in advance

Worth 30 points! in this diagram, both polygons are regular. what is the value, in degrees, of the sum of the measures of angles abc and abd?