Answer:
Step-by-step explanation:
Hey there this si the upper and lower bound for 17
16.5<17<17.5
In 1 hour, a machine could make:

parts
In 28.8 hours, that machine make

parts
Answer:
x = 8 and y = 5
Step-by-step explanation:
2x - 3y = 1 --(1)
x + 2y = 18
x = 18 - 2y --(2)
sub (2) into (1):
2(18 - 2y) - 3y = 1
36 - 4y - 3y = 1
-7y = 1 -36
7y = 35
y = 5
x = 18 - 2(5) = 8