Lisa needs 250 yards of yarn to knit a hat. she has 185 yards of yarn and needs to buy the rest. how many yards of yarn does she need to buy? use the variable y to represent the number of yards of yarn she needs to buy. which equation represents this situation and its solution? y + 250 = 185; y = 65 y + 185 = 250; y = 65 250y = 185; y = 55 185y = 250; y = 55

Dexter read 11 science fiction books and 5 history books. lena read 9 science fiction books and 4 history books. compare the students’ ratios of science fiction books to history books. 1. determine the ratios’ form:    science fiction books to history books 2. write the ratios as fractions:    dexter: 115; lena: 94 3. rewrite with a common denominator. 4. compare. 5. answer the question. determine which shows the correct comparison of the ratios for this problem.

Candy lives in the center of town. her friend darlene lives 28 miles to the east and her friend dana lives 21 miles north. approximately how far do dana and darline live apart ?

Billie holiday sells children's clothing for sara vaughn's toddler shop. baby blankets sell for $29.99 after a markup rate based on cost of 109%. find the cost and the markup.