Aman can harvest his farm in 18 hours. his son can harvest the same farm in 12 hours. how long will it take them working together? ]

What are the measures of ∠a, ∠b, ∠c and ∠d? explain how to find each of the angle measure.

If f(x)=3x+1 and f^-1=x-1/3, then f^-1(7)=

Saline iv fluid bags cost $64.20 for 24, 1000 ml bags from one supplier. a new supplier sells 500 ml bags for $2 each. the hospital uses about 10,000, 1000 ml bags each month. nurses report that about half of the bags are more than half full when they are discarded. if you are going to use only one supplier, which size bag provides the best deal, and how much will you save each month? compare the cost of the new supplier to the current one.