What is the value of the expression below when z=4
10z=3

Pls me this is due today and i need i will make brainliest if you me answer correctly and i will report if you try to give me a dumb answer.

Which part of a 2-column proof is the hypothesis of the conjecture? a) given b) reasons c) prove d) statements ! i think it's b but i'm not quite

The cost of using a service is $0.25 per min. what equation correctly represents the total cost c, in dollars, for d days of use?