Alba bought two necklaces for $6 each and later sold each for $10. then she bought three necklaces for $7 each and later sold each for $13. how much profit did alba make selling necklaces? a) $21 b) $26 c) $33 d) $42

the correct answer is b

Step-by-step explanation:

Alba made $26 in profit selling necklaces. Apply the distributive property.

2(10 − 6) + 3(13 − 7) = $26

the answer is 2/54

step-by-step explanation:

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).