Does a 20% discount on the original price of an item, followed by the use of a 10% off coupon, results in a total discount of 30%?

Aline has a slope of 1/4 and passes through point (0.4,-1/2). what is the value of the y-intercept?

Molly shared a spool of ribbon with 12 people. each person received 3 feet of ribbon. which equation can she use to find r, the number of feet of ribbon that her spool originally had?

Atruck can be rented from company a $50 a day plus $0.60 per mile. company b charges $20 a day plus $0.80 per mile to rent the same truck. find the number of miles in a day at which the rental costs for company a and company b are the same