The answer is -.2.5 hope that help
67.5 as distance = rate x time
So rate would equal distance / time
Rate = 22.5 miles / 1/3 hour
Rate = 67.5 mph
We're told x=-5 and y=11 and asked to evaluate a few expressions. That just means substitute these values into the expressions and compute the exact numerical answer.
Answer: 94
x to the power of 3
![x^3 = (-5)^3 = -5 \times -5 \times -5 = -125](https://tex.z-dn.net/?f=x%5E3%20%3D%20%28-5%29%5E3%20%3D%20-5%20%5Ctimes%20-5%20%5Ctimes%20-5%20%3D%20-125)
Answer: -125
•6y to the power of 2
Probably means
![6y^2 = 6(11)^2 = 6(121) = 726](https://tex.z-dn.net/?f=%206y%5E2%20%3D%206%2811%29%5E2%20%3D%206%28121%29%20%3D%20726%20)
Answer: 726
![5(3x+2y) = 5(3(-5) + 2(11)) = 5(-15 + 22) = 5(7) = 35](https://tex.z-dn.net/?f=5%283x%2B2y%29%20%3D%205%283%28-5%29%20%2B%202%2811%29%29%20%3D%205%28-15%20%2B%2022%29%20%3D%205%287%29%20%3D%2035%20)
Answer: 35
•(y-x) to the power of 2
![(y - x)^2 = (11 - -5)^2 = 16^2 = 256](https://tex.z-dn.net/?f=%28y%20-%20x%29%5E2%20%3D%20%2811%20-%20-5%29%5E2%20%3D%2016%5E2%20%3D%20256)
Answer: 256
Decrease by 6% = 100 - 6 = 94
Increase this by 19%
= 19/100 x 94
= 17.86
94 + 17.86 = 111.86
\ 100 = 1.1186