If 5x+3y=12 and 4x-5y=17, what is the value of y?

If f(x) = x+8 and g(x) = 4x- 3, find (f+g)(x)

Cody started biking to the park traveling 15 mph, after some time the bike got a flat so cody walked the rest of the way, traveling 4 mph. if the total trip to the park took 6 hours and it was 46 miles away, how long did cody travel at each speed? solve using rate times time= distance

An 18% discount on a watch saved a shopper $72. find the price of the watch before the discount