-1/2x+6 I need help can anybody help?

Acircle has a circumference of 7.850 units. what is its radius?

Glenda makes an online purchase for picture frames for $12.95 each and formats of $5.89 each the site says it taxes paid by the customer or 6.5% of the total purchase price shipping charges are based on the

Car a and car b were in a race .the driver of car b claimed that his car was twice as fast as car a