During a discussion in science class, shaeon learns that at birth an elephant weighs around 230 pounds. in four herds of elephants tracked by conservationist, about 20 calves were born during the summer. in scientific notation, express approximately how much the calves weighed all together

Add 1/7 + -1/7 your answer should be reduced to its smallest form and should not be an improper fraction

F(x) = (x^2 + 3x − 4) and g (x) = (x+4) find f/g and state the domain.

Suppose there is a simple index of three stocks, stock abc, stock xyz, and stock qrs. stock abc opens on day 1 with 4000 shares at $3.15 per share. stock xyz opens on day 1 with 5000 shares at $4.30 per share. stock qrs opens on day 1 with 6000 shares at $4.60 per share. the price of stock abc on day 8 begins at $3.50. the price of stock xyz on day 8 begins at $3.90. stock qrs opens on day 8 with a price of $4.50 per share. assume that each stock has the same number of shares that it opened with on day 1. what is the rate of change of this simple index over 1 week?