Find sec θ if the terminal side of θ in standard position contains the point (4, -3)? a. -3/4 b. -5/3 c. 5/4 d. 4/5

If we plot the point (4, -3), we find ourselves in QIV.  Drawing a line to connect the origin to the point creates a right triangle with a base of 4 and a height of -3.  We need to find the length of the hypotenuse.  Using Pythagorean's Theorem, and .  So c = 5.  The secant identity is the coidentity of cosine, and cosine's ratio is side adjacent over hypotenuse; that means that the secant ratio is hypotenuse over side adjacent.  That ratio for secant is 5/4, choice c from above.

1. 0.3 •4 is the same as 4 groups of 0.32. 7•0.8 is the same as 7 groups of 0.83. it increases by 0.5 every time, so 0.5x4 it increases by 0.9 every time, so 0.9x5. 0.9•12=10.86. 0.47•5=2.35i can finish the next ones in a separate post

Num of plants = (original#ofplants)*(1.6)^t