State DMV records indicate that of all vehicles undergoing emissions testing during the previous year, 70% passed on the first try. A random sam- ple of 200 cars tested in a particular county during the current year yields 124 that passed on the initial test. Does this suggest that the true propor- tion for this county during the current year differs from the previous statewide proportion? Test the relevant hypotheses using a 1⁄4 .05.

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.

Which number is located at point a on the number line? a number line is shown from negative 10 to 10 with each interval mark on the number line representing one unit. point a is labeled one interval mark to the right of negative 5.

Which is an x-intercept of the graphed function? (0, 4) (–1, 0) (4, 0) (0, –1)