for each new desk that is purchased, by how much does the amount of money left in the school's desk fund increase

I don't really know if i have enough information to solve this problem, but if you call the schools desk fund x and the amount of money a desk costs y then you can make an equation. x is the total value of money you have to spend. X-y is how much money is left after one desk is purchased. Sorry if this wasn't any help, I cannot really understand this question!

c. 27 units.

step-by-step explanation:

we are told that in circle a, ∠bae ≅ ∠dae.

we can see from our given diagram that in and ;

, as these are radii of our given circle.

therefore, by sas congruence postulate.

hence, side be will be equal to side de as corresponding parts of congruent triangles are congruent. so we can set an equation to find the value of x as:

now let us substitute x=17 in the expression for the length of be.

therefore, length of be will be 27 units and option c is the correct choice.