Need help quick! The figure below shows a triangular wooden frame ABC. The side AD of the frame has rotted and needs to be replaced:

IMAGE IS ATTACHED

What is the length of the wood that is needed to replace AD?
8.1 inches
6.2 inches
5.9 inches
7.4 inches

Find an equation (in term of x) of line through the points (-1,3) and (1,4)

What is the nth term rule of the linear sequence below? 27 , 25 , 23 , 21 , 19 , . .

/is used for a fraction 1) if x = 2/3 and y = 3/4, what is the value of (x + y) (x/y) expressed as a common fraction? 2) what is the least positive integer greater than 1 that leaves a remainder of 1 when divided by each of 2, 3, 4, 5, 6, 7, 8, and 9? 3) the ponde family's powerjet pumps 420 gallons of water per hour. at this rate, how many gallons of water will it pump in 45 minutes? 4) kim's insurance company pays 80% of the cost of all prescription medication she purchases in a year beyond the first $250 worth of prescriptions. her prescriptions for this year cost a total of $570. how many dollars of this amounts will kim's insurance company pay?