An artist makes three types of ceramic statues at a monthly cost of $650 for 180 statues. the manufacturing costs for the three types are $5,$4, and $3. if the statues sell for $20,$12, and $9,respectively, how many of each type should be made to produce $2,100 in monthly revenue?

we have three unknowns and so need three equations

for costs  

x+y+z=180

5x+4y+3z=650

for revenue

20x+12y+9z=2100

x+y+z=180

5x+4y+3z=650

x=30

y=50

z=100

b) the dogs need to shift their focus to human scent.

32/80  

91/140

the last one 54 doesn't go into 45. 54/100 ?

step-by-step explanation: