Kelly earns more because she earns $12.00 per hour, and mark earns $8.50 per hour
The slope of a line is simply a ratio of the change in y-value to the change in x-value
Change in y = y₂ - y₁
= 12 - (-6) = 18
Change in x = x₂ - x₁
= 6 - 3 = 3
Ratio of change in y to change in x = 18/3 = 6
The slope is 6
Ooo okay. Let's start with that 15% off:
to find this you need to turn 15% into a decimal by dividing by 100:
15/100= 0.15
you then take 0.15 and multiply it by the cost of the shirt which is $85 to find out how much is taken off of the price and then take your answer and subtract it from $85:
(85)(0.15)=$12.75 off
$85.00-$12.75= $72.25 total after 15% is taken off
now, let's do the additional 10% off the same way except we will subtract the discount from $72.25
10/100=0.1
(85)(0.1)= $8.50 off
$72.25-$8.50=$63.75 as your final total
-42.86%
when rounded to the nearest tenth it is...
-42.9%