WILL GIVE BRAINLIEST! Use the markup equation S = C + rC, where S is the selling price, C is the cost, and r is the markup rate.

A car navigation system costing $370 is sold for $447. Find the markup rate. Round to the nearest tenth of a percent.
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1. what is the measure of ∠abc? what is the measure of ∠abd?

Which answer is the solution set to the inequality |x|< 9? a. x< -9 or x> 9 b. x> -9 and x< 9 c. x> -9 or x< 9 d. x< 9 and x< 9

Oscar and julie ashton are celebrating their 15th anniversary by having a reception hall. they have budgeted $4,500 for their reception. if the reception hall charges a $90 cleanup fee plus & 36 per person, find the greatest number of people that they may invite and still stay within their budget.