What is the value of n?

Jenisey has $24 to spend on seven pencils. after buying them she had $10. how much did each pencil cost.?

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.

Find the solution(s) to the system of equations. select all that apply y=x^2-1 y=2x-2