Answer:
-4
Step-by-step explanation:
10y+50=10
10y=-40
y=-4
Answer: 12,620,256
Step-by-step explanation:
Given: The camera shop socks eight different types of batteries and there re at least 31 batteries of each type.
Here we want to select r= 31 batteries from n= 8 kinds of batteries, then formula we use to find number of ways is 

Hence, the number of ways can a total inventory of 31 batteries be distributed among the eight different types = 12,620,256
Answer:
20+y=xgallons
Step-by-step explanation:
Slope-intercept forms:
line r= y= 2/5x+2
line s= y= -3/2x+3
line T= y= -2/3x-2
Answer:
-26
Tip for solving related problems: use order of operations