Luis purchased a laptop computer that was marked down by 2/5 of the original price. How much does Luis pay if the laptop was originally $550.00?

$220

Step-by-step explanation:

Markdown is the percentage decrease

2/5 is written as .4 in decimal form (40%)  

So when you multiply the number with the markdown percent, you get

550 times .4 = $220

the amount you'd have after the work is $1.55

step-by-step explanation:

you subtract 95% from $31.

correct choice is b

step-by-step explanation:

when you calculate the average rate of change of a function, you are finding the slope of the secant line between the two points. for the function the average rate of change from point to point can be calculated as

to find the average rate of change from day 2 to day 10, note that at day 2, 8 houses were sold, so a(2,8) and at day 10, 2 houses were sold, so b(10,2). thus,