Lighthouse casts a 72 foot long shadow at the same time a nearby building that is 12 feet tall cast an 18 foot Longshadow what is the height of the lighthouse

The school that imani goes to is selling tickets to the annual dance competition. on the first day of the ticket sales the school sold 7 adult tickets and 5 child tickets for a total of $96. the school took in $40 on the second day by seling 3 adult tickets . find the price of an adult ticket and the price of a child ticket. solve by using substitution elimination college prep algebra math heres the 2 equations i came up with 7x+5y=96 and 3x+2y= -40 show all workiv be stuck on this.

Find the maximum value of p= 4x + 5y subject to the following constraints :

How does the graph of y = 3x compare to the graph of y = 3-x?