Please help me with my assignment

The variable in a relation who’s value depends on the value of the independent variable is called what?

If t17 = 3 (t5) in an arithmetic progression, find t1 in terms of d.

One astronomical unit (1 au) is about 1.496 alt tag missing. kilometers. if you wrote this number of kilometers in regular decimal notation (for example, 528 and 3,459 are written in regular decimal notation), how many zeros would your number have?