Dana is trying to walk 12 miles every week. she walked 3 miles on monday and 5 miles on wednesday. how many more miles does she have to walk this week in order to reach her goal

The number of chocolate chips in an 18-ounce bag of chocolate chip cookies is approximately normally distributed with a mean of 1252 chips and standard deviation 129 chips. (a) what is the probability that a randomly selected bag contains between 1100 and 1500 chocolate chips, inclusive? (b) what is the probability that a randomly selected bag contains fewer than 1125 chocolate chips? (c) what proportion of bags contains more than 1225 chocolate chips? (d) what is the percentile rank of a bag that contains 1425 chocolate chips?

If f(x)=-x^2+6x-1 and g(x)=3x^2-4x-1,find(f+g)(x)

An arc subtends a central angle measuring 7pi/4 radians what fraction of the circumference is this arc?