Solve each equation. if an equation has no solutions or if an equation has infinitely many solutions, explain how you know. 15. 3x − x − 5 = 2(x + 2) − 9 16. 7x − 3x + 7 = 3(x − 4) + 20 17. −2(x − 2) − 4x = 3(x + 1) − 9x 18. 5(x + 2) − 3 = 3x − 8x + 7 19. 4(x + 3) − 4 = 8x + 10 − 4x 20. 3(x + 2) + 4x − 5 = 7(x + 1) − 6

An animal shelter has 21 puppies. if the puppies are 28% of the total dog and cat population , how many dogs and cats are in the animal shelter

20 points 1. your friend, taylor, missed class today and needs some identifying solutions to systems. explain to taylor how to find the solution(s) of any system using its graph. 2. taylor graphs the system below on her graphing calculator and decides that f(x)=g(x) at x=0, x=1, and x=3. provide taylor some feedback that explains which part of her answer is incorrect and why it is incorrect. f(x)=2x+1 g(x)=2x^2+1

Janie has $3. she earns $1.20 for each chore she does and can do fractions of chores. she wants to earn enough money to buy a cd for $13.50.