15. Johanna starts the month with $54 in her savings account. At the end of each week, Johanna adds S8 to the account.
54

Solve 2x+y=3 x+y=5 in substitution method

Find an equation of the line perpendicular to the graph of 28x-7y=9 that passes through the point at (4,1)

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.