d) \( \left\{\begin{array}{l}x+2=-y \\ -y+3=2 z \\ 4 x-z=1\end{array}\right. \)

8 Olivia drove 170 miles each way (there and back) to visit her cousin. On the trip, Olivia drove an extra 20 miles to see the Grand Canyon. She also drove an extra 45 miles to see Lake Powell. Write one or more equations you could use to represent th number of miles Olivia drove on her trip.

3. Use the system of equations shown for Parts A and B. \( \left\{\begin{array}{l}3 x-2 y=-10 \\ -4 x+3 y=13 \\ \text { A. Solve one of the equations for either variable. } \\ \text { B. Use substitution to find the solution of the system. }\end{array}\right. \).

4. Two almirahs are purchased for \( 27,800 . ₹ 200 \) was spent on the transportation. One of them is sold at a profit of \( 40 \% \) and the other one at a loss of \( 40 \% \). If the selling price was same in both the cases, find the cost price of each alminh?

A straight highway connects Town A and Town B, a distance of 45 kilometres, Andy started biking along the highway from Town A to Town B at 8:00 AM at a constant speed of 3 kilometres per hour. Ben started biking on a parallel highway from Town B to Town A at 9:00 AM at a constant speed of 4 kilometres per hour. How many kilometres had Ben biked when they met along the way?

Without actually calculating, find the value \( (-10)^{3}+(7)^{3}+(3)^{3} \) వాస్తవ గణన చేయకుండానే \( (-10)^{3}+(7)^{3}+(3)^{3} \) యొక్క విలువ కనుక్కోఁ