Question 40 of 43 Researchers conduct a study to evaluate the level of
pollution present in a river. They select several locations
along the river and then take a sample of water from each
location.
What is the population under study?

ILL GIVE BRANLIEST OR HOWEVER YOU SPELL IT

How is working backward similar to solving an equation?

Which ordered pair is a solution of the equation? y + 5 = 2(2+1) choose 1 answer ® only (5,10 ® only (-1,-5) © both (5, 10) and (-1,-5) 0 neither

Will mark the brainliest.paula makes stained-glass windows and sells them to boutique stores. if her costs total $12,000 per year plus $4 per window for the frame. how many windows must she produce to earn a profit of at least $48,000 in one year if she sells the windows for $28 each?