Adrian's computer cost 20% less than Jocelyn's computer. Adrian's computer cost $640. Adrian's
computer cost 15% more than Corbin's computer.
A. Write an equation that could be used to find the cost of Jocelyn's computer.
B. Write an equation that could be used to find the cost of Corbin's
computer.

  21.3

step-by-step explanation:

multiplying the given equation by c/sin(25°), we get

  c = 9/sin(25°) ≈ 21.2958 ≈ 21.3

we assume "c" is the length of ab, the side opposite angle c in triangle abc.

days of the week

step-by-step explanation:

javier earned more money then kyle, so that won't always be a constant term, but the days of the week do not change so that term is always constant.

edit: i meant

a - base

b - exponent

so,