Kevin and randy muise have a jar containing 65 coins all of which are either quarters or nickels the total value of coins in the jar is $10.25 how many of each type of coin do they have

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

Do you mind if you guys me with this question i’m on number 8

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