Before the industrial revolution in 1800 the concentration of carbon in earth’s atmo- sphere was 280 ppm. the concentration in 2015 was 399 ppm. what is the percent increase in the amount of carbon in the atmosphere?

2x + 1 < 5 solve the following inequality. then place the correct number in the box provided.

What is sin 7x/4 ? i need on this urgent trig

Cameron indoor stadium at duke university is one of the most revered sites in all of college basketball, as well as in all of sports period. duke’s men’s and women’s basketball programs have attained quite a few wins in the building over the last seventy years. cameron indoor stadium is capable of seating 9,460 people. for each game, the amount of money that the duke blue devils’ athletic program brings in as revenue is a function of the number of people in attendance. if each ticket costs $45.50, find the domain and range of this function.