Amanda uses the equation y = kx to determine how much money (y) she earns after working any number of hours (x). amanda earned $350 after working 40 hours. what is the value of k in amanda’s equation?
a) 8.75
b) 40
c) 350
d) 390

Sanya noticed that the temperature was falling at a steady rate of 1.4 degrees every hour from the time that she first checked her outdoor thermometer. by 6 a.m., the temperature had fallen 21 degrees. which expression can you use to find how many hours earlier she had first checked the thermometer?

In trapezoid abcd, ac is a diagonal and ∠abc≅∠acd. find ac if the lengths of the bases bc and ad are 12m and 27m respectively.

Pleas its really urgent and i would really appreciate it! what is the value of x? enter your answer in the box. x =