Starting at noon, Sophie observed the amount of snow on her lawn during a blizzard. She created a graph to represent how many inches of snow were on the lawn at x
minutes past noon. What does the y-intercept in the graph represent?

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.

Prove that the value of the expression 7^8–7^7+7^6 is divisible by 43.

Find the area of the triangle formed by the origin and the points of intersection of parabolas y=−3x^2+20 and y=x^2−16.