What is the slope of the straight line through points (2,10) and (5,8) ?

a : slope = 2/3

b : slope = 7/5

c : slope = 2/5

d : slope = -2/3

For f(x)=2x+1 and g(x)= x^2 -7, find (f•g)(x)

Two customers went to a post office. first customer paid $12 for 14 and 5 envelopes the second paid 24.80 for 10 postcards and 15 envelopes. what is cost of each envelope?

The birth weights of newborn babies in the unites states follow in a normal distrubution with a mean of 3.4 kg and standard deviation of 0.6 kg. reaserches interested in studying how. children gain weights decide to take random samples of 100 newborn babies and calculate the sample mean birth weights for each sample