Artie needs to save $450 to buy the new bicycle that he wants. He currently has $300. What percent of the new cost of a new bicycle has he saved? Claire decides to solve this problem by setting up a proportion. What should her proportion look like?

A.) 300/100 + x/450

B.) x/100 = 450/300

C.) x/100 = 450/300

D.) 450/100 = x/300

4

step-by-step explanation:

c. side angle side. u shares the same sides

ending amount = beginning amount / (2^n)

where "n" = number of half-lives (or elapsed time / half-life)

ending amount = 50 mg / (2 ^10 / 5.3)

ending amount = 50 mg / (2 ^ 1.8867924528)

ending amount = 50 m / 3.6981210597

ending amount = 13.5203794557 mg

or about 13.5 mg remain

source:  

graph #4 (last graph) depict the function   f(x)= -m(x-d)^1/5 i

step-by-step explanation:

we know that

m=slope

but in this function slope is -m that means slope is decreasing and it is decreasing by 1/5 points down the x-axis.

which is shown in graph four

a decreasing slope down x-axis by 1/5 points.

hence 4th graph is the right option for this.