1. which best describes the relationship between the successive terms in the sequence shown?

9, –1, –11, –21, …

a)the common difference is –10.
b)the common difference is 10.
c)the common ratio is –9.
d)the common ratio is 9.

2. a sequence is defined recursively using the formula f(n + 1) = f(n) – 5 . which sequence could be generated using this formula?

a)1, –5, 25, –125,
b)2, 10, 50, 250,
c)3, –2, –7, –12,
d)4, 9, 14, 19,

According to the 2008 u.s. census, california had a population of approximately 4 × 10^7 people and florida had a population of approximately 2 × 10^7 people. which of the following is true? a. the population of florida was approximately two times the population of california. b. the population of florida was approximately twenty times the population of california. c. the population of california was approximately twenty times the population of florida. d. the population of california was approximately two times the population of florida.

The ratio of the perimeters of two similar triangles is 4: 3. what are the areas of these triangles if the sum of their areas is 130cm2?

The approximate line of best fit for the given data points, y = −2x − 2, is shown on the graph.which is the residual value when x = –2? a)–2 b)–1 c)1 d)2