Let A, B, C and D be the points on y = e' with x-coordinates 0, 1, 2 and 3. a)
Find the y-coordinates of A, B, C and D, and sketch the situation.

b)

i) Find the gradient of the chord
AB.

ii) Hence use y - yı = m(x – xı) to write down the equation of the chord AB.

iii) Put y = 0 to show that the x-intercept of the chord AB is
- 1/e - 1

Identify the type of observational study described. a statistical analyst obtains data about ankle injuries by examining a hospital's records from the past 3 years. cross-sectional retrospective prospective

Asquare and an equilateral triangle have the same perimeter. each side the triangle is 4 inches longer than each side of the square. what is the perimeter of the square

10 points? ? +++ me asap gabriella uses the current exchange rate to write the function, h(x), where x is the number of u.s. dollars and h(x) is the number of euros, the european union currency. she checks the rate and finds that h(100) = 7.5. which statement best describes what h(100) = 75 signifies? a) gabriella averages 7.5 u.s. dollars for every 100 euros. b) gabriella averages 100 u.s. dollars for every 25 euros. c) gabriella can exchange 75 u.s. dollars for 100 euros. d) gabriella can exchange 100 u.s. dollars for 75 euros.