Yvonne continues to work full-time at her job while she attends college part-time. It takes 5 years for Yvonne to complete the program, but when she does she is able to increase her salary from $37,000 per year to $45,000 per
year. At this rate, Yvonne will have recovered her college costs after 4.5 years. How much did it cost Yvonne to go to
college?
a $36,000
b $45,000
C. $40,000
d. $32,000

C. 40,000

Step-by-step explanation:

guess at question:

a vertical line intersects the graph of g(x,y) = 0 at two points. what conclusion follows about the function f(x) implicitly defined by g(x,f(x)) = 0?

the domain of f(x) cannot include the x coordinate of any such vertical line.

informally, f(x) is not a function, and

g(x,y)=0 cannot be solved for y uniquely.

the relation r = {(x,y) such that g(x,y) = 0} is a function if

for all (a,b) ∊ r and (c,d) ∊ r, a=c implies b=d.

step-by-step explanation:

the surface area is 124cm²

step-by-step explanation:

length: 4cm

width: 9cm

height:   2cm