(math) valentina purchased 200 beads for $48 to make necklaces. if she needs to buy 25 more beads, how much will she pay if she is charged the same rate?

48/200=x/25 multiply both sides by 25 to get alone .  X=25+48/200. Then   X= 48/8. So x=6. Therefore she needs to pay $6 more  

We can find the unit price for each bead by using 48/200.

48/200 = 0.24.

Valentina paid $0.24 for each bead.

Now, to find out how much it'd cost for 25 more, we can simply use 25 * 0.24.

25 * 0.24 = 6

Valentina will pay $6 for 25 more beads.

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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).