Mrs. Jones's home is 3 mi from the library. The library is 2 mi from the bank, the bank is 4 mi from the grocery store, and the grocery store is 1 mi from Mrs. Jones's home. What is the distance Mrs. Jones traveled when doing her errands?

Idon’t quite understand this problem

What’s #16 asking and how do i solve it?

Identify the correct relation showing that the radius r of the orbit of a moon of a given planet can be determined from the radius r of the planet, the acceleration of gravity at the surface of the planet, and the time τ required by the moon to complete one full revolution about the planet. determine the acceleration of gravity at the surface of the planet jupiter knowing that r = 71 492 km and that t= 3.551 days and r= 670.9 × 10^3 km for its moon europa.