Will give brainliest the sequence 7 21 63 the number of jumping jacks justin did each week, starting with the first week of him working out. a. is the sequence arithmetic or geometric? how do you know? b. what is the recursive rule for the sequence? c. what is the iterative (explicit) rule for the sequence.

Ineed me i stuck and i don’t want to get it wrong

To solve the system of equations below, pedro isolated the variable y in the first equation and then substituted it into the second equation. what was the resulting equation? { 5y=10x {x^2+y^2=36

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 california was approximately two times the population of florida. b. the population of florida was approximately twenty times the population of california. c. the population of florida was approximately two times the population of california. d. the population of california was approximately twenty times the population of florida.