How many marbles do each own initially?
(3)
the ratio of ann's age to bob's age is 3: 4
in 7 years time this ratio will be 4: 5
( what are their ages now?
(i) after how many years (from now)
will the ratio be 5: 6?

What is the value of r of the geometric series?

The dash figure is a dilation if the original figure. find the scale factor. classify the dilation as an enlargement or a reduction

Paula makes stained-glass windows and sells them to boutique stores. if her costs total $12,000 per year plus $4 per window for the frame. how many windows must she produce to earn a profit of at least $48,000 in one year if she sells the windows for $28 each? 1. define a variable for the situation. 2. write an inequality that represents her profit. note: revenue is money coming in. cost is money going out. profit is the difference between the revenue and the cost. in other words: revenue - costs profit 3.using words, describe how many windows she must sell to have a profit of at least $48,000.