Un trunchi de piramidă triunghiulară regulată are înălțimea egală cu 12 cm apotema bazei mari egală cu 6 cm şi apotema bazei mici egală cu 4 cm. Calculați înăltimea piramidei din care provine trunchiul şi lungimea apotemei trunchiului de piramidă.

for the free

< < < emily> > >

the revenue of the fitness center, y, is the product of two factors: the number of members and the fee paid by each member. there are 320 members now, but number of members goes down by 10 for each $5 increase in fees, so if x is the number of $5 price increases then members is equal to (320 - 10x). since the fee is currently $45, and the fee increases by $5 for every price bump x, the fee is given by (45 + 5x). so, revenue y is given by y = (320 - 10x)(45 + 5x).