Does anyone play prodigy (middle schoolers)

Determine whether the graphs of y=8x+5 and -y=8x-5 are parallel, perpendicular, coincident, or none of these. a. coincident b. parallel c. perpendicular d. none of these

You are a clerk at convenience store. a customer owes 11.69 for a bag of potatoes chips. she gives you a five dollar bill. how much change should the customer receive?

1mile equals approximately 1.6 kilometers. which best approximates the number of miles in 6 kilometers?