Describe the error made in subtracting the two rational expressions shown: 1/x-2-1/x+1=x+1/x-2(x+1)-x-2/(x+1)= -1/x-2(x+1)

According to modern science, earth is about 4.5 billion years old and written human history extends back about 10,000 years. suppose the entire history of earth is represented with a 10-meter-long timeline, with the birth of earth on one end and today at the other end.

At 6 1/2 cents per pound of string beans how much does 7 pounds cost

Ben frank is an electrician who installs lighting fixtures. he charges (in dollars) his clients 15h+40f15h+40f where hh is the number of hours worked and ff is the number of fixtures installed. how much does ben frank charge when he works 77 hours and installs 99 fixtures?