On a certain hot summer's day, 475 people used the public swimming pool. The daily prices are 1.25 for children and 2.50 for adults. The receipts for admission totaled 845 How many children and how many adults swam at the public pool that day?

What is the value of x in the following equation? -3x-2=2x+8

Abag contains 4 red, 7 blue and 5 yellow marbles. event a is defined as drawing a yellow marble on the first draw and event b is defined as drawing a blue marble on the second draw. if two marbles are drawn from the bag, one after the other and not replaced, what is p(b|a) expressed in simplest form? a. 7/16 b. 7/15 c. 14/16 d. 14/15

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