The landscape company paves patios for its customers using concrete. the graph represents the amount of concrete used, in pounds, over time, in hours.

how many pounds of concrete were used before the workers took a break?

i am between 160 and 240

the answer is 80

Step-by-step explanation:

I just took test so, I know this is the right answer

a

step-by-step explanation:

the answer is a

1^3 + 2^3 + 3^3 +4^3 = (1+2+3+4)^2

step-by-step explanation:

i am only able to answer the first part. i am not sure about the second part. sorry