In a random sample of 60 computers, the mean repair cost was $150 with a population standard deviation of $36. Use this sample data to construct a 90% confidence interval for the mean repair cost, μ, of all such computers.

Ebuka's monthly rent is $750. if ebuka pays the rent late, his landlord charges 4% interest per week that the payment is late. write a function that gives the total cost r(t), in dollars, of ebuka's rent if he pays it t weeks late.

Find the maximum value of p= 4x + 5y subject to the following constraints :

Olivia is using 160 quilt squares to make a red, yellow, and blue quilt if 25% of the quilt are red and 30% are yellow how many quilt squares are blue