0.9a = -2.7 what is the answer for this question thx

Let event a = you roll an even number on the first cube.let event b = you roll a 6 on the second cube.are the events independent or dependent? why?

If the tip varies directly with the number of guest which equation represents between the tip,t, and the number of guest,g?

At a local museum, the total price for one adult and one child is $11. mrs. smith paid for herself and her three children. she spent $19. record the system of equations to be solved and then find the price of an adult and child ticket using either elimination or substitution.