18y to the 20th power minus 90y to the fifth power
3,141......
_____________________________
B because if you take it it would be b
![d=v \cdot t](https://tex.z-dn.net/?f=d%3Dv%20%5Ccdot%20t)
d - distance
v - speed
t - time
Car A:
![v_1 \\ t_1=2 \\ d_1=v \cdot 2=2 v](https://tex.z-dn.net/?f=v_1%20%5C%5C%0At_1%3D2%20%5C%5C%0Ad_1%3Dv%20%5Ccdot%202%3D2%20v)
Car B:
15 mph faster than car A
![v_2=v_1+15 \\ t_2=1.5 \\ d_2= (v_1+15) \cdot 1.5=1.5v_1 + 22.5](https://tex.z-dn.net/?f=v_2%3Dv_1%2B15%20%5C%5C%20t_2%3D1.5%20%5C%5C%20d_2%3D%20%28v_1%2B15%29%20%5Ccdot%201.5%3D1.5v_1%20%2B%2022.5)
Both cars traveled equal distances:
![d_1=d_2 \\ 2v_1 = 1.5v_1+22.5 \\ 2v_1-1.5v_1=22.5 \\ 0.5v_1=22.5 \\ v_1=45 \\ v_2=45 + 15 =60](https://tex.z-dn.net/?f=d_1%3Dd_2%20%5C%5C%0A2v_1%20%3D%201.5v_1%2B22.5%20%5C%5C%0A2v_1-1.5v_1%3D22.5%20%5C%5C%0A0.5v_1%3D22.5%20%5C%5C%0Av_1%3D45%20%5C%5C%20v_2%3D45%20%2B%2015%20%3D60)
Car B traveled at the speed of 60 mph.
9514 1404 393
Answer:
59 3/4
Step-by-step explanation:
The change from the opening price is ...
-50 1/2 +110 1/4 = 60 -1/4 = 59 3/4 . . . change from opening price