Hunter pushed a couch across the room. He did 800 J of work in 20 seconds. The couch weighed 500 N. How much power did he have? A . 40 W
B . 1.6 w
C. 16,000 w
D . 800 w

B . D . 800 w

Step-by-step explanation:

did 800 J of work in 20 seconds. The couch weighed 500

answer:   expression= p+p*d%

price reduction + sale price = $625

sale price: $p+$p*d%

where d% is the percentage of discount

step-by-step explanation:

original price = p

price went down by $150 price reduction $p*d%

sale price= $ 475

therefore the price before sale is: $625

and the expression that shows the price before sale is: p+p*d%

the answer is b.

64

step-by-step explanation:

c=2πr=2·π·8≈64