a. To represent the length of the cloth needed to make a single piece of blouse, we can use the following function:
Length of Cloth for One Blouse = (x + 99) / (x + 5) meters
This function calculates the required cloth length based on the values of x.
b. To represent the total amount of cloth bought for making 100 blouses, we need to multiply the length needed for one blouse by the number of blouses (100). The cost of each meter is 120/x pesos. So, the function representing the total amount of cloth bought (in pesos) is:
Total Cloth Cost = (Length of Cloth for One Blouse * 100) * (120/x) pesos