Answer:
The bakery sells doughnuts at $2.75 for each 1/2 dozen.
Step-by-step explanation:
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4z+2.z-4.2=3z+11
4z-3z+2z=11+8
3z=19
z=19/3
one solution
Answer:
x <9
Step-by-step explanation:
6(2x-11)<-3+5x
Distribute
12x -66 < -3+5x
Subtract 5x from each side
12x-5x -66 < -3+5x-5x
7x -66< -3
Add 66 to each side
7x-66+66<-3+66
7x<63
Divide by 7
7x/7 <63/7
x <9
If x and y vary inversely, then xy = const.
x = 10, y = 8

You could use the solution of 9/4 times 2