5. D. <span>2.25k≥180;k≥80
6. A. </span>
The markup rate would be 80% the original value.
2x+7
is the simplest form
We are given that the passenger's jet is flying at a speed of 185 miles per hour, with a direction of 36 degrees, and the wind speed being 47 mph with a direction of 120 degrees. From this, you could create a diagram is shown in the attachment.
[ 185 cos 36, 185 sin 36 ]
+ [ 47 cos 120, 47 sin 120 ]
_______________________
[ 185 cos 36 + 47 cos 120, 185 sin 36 + 47 sin 120 ]
√( 4263 + 33988 )^2
= ( About ) √38251 = 195.57 mph
<u><em>Solution = 195.6 mph, 069° </em></u>
Do 12x18 and you will get your anser
