If the conversion rate for swiss francs is 1.68 francs = 1 u. s. dollar, then how many swiss francs can be exchanged for $79.00 in u. s. currency?

Rewrite the hyperbolic equation 4y^2 -9x^2 +54x-8y-113=0

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.

Awindow washer cleans 42 windows in 2 hours. at this rate, how many windows did he clean in 180 minutes.