Answer:
x = 7
Step-by-step explanation:

48000 i think i might have missed a step
Answer the shopping cart had a velocity of 3 m/s as it moved across the parking lot.
Step-by-step explanation:
The time taken for this displacement is 5.2 seconds. So, the velocity of the shopping cart can be estimated by the above mentioned relation as, velocity of shopping cart = 15.6 m / 5.2 s = 3 m/s.
5^3=125; 2.5^2=6.25. So the answer to your first question is 125, and the second one is 6.25