Answer:
lack
Step-by-step explanation:
x,y
850
400+550+850=1800. 1800/3= 600
m=x^3+y^2-6(x-y)-2021
distribute: 6x-6y
now you have m=x^3 + y^2 - 6x - 6y - 2021
D is the answer
Well 35 dollar one time fee
plus 15 per hour
If used 1 hour 15+35=50