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.
%

Which graph represents the equation y =4x

Organic apples are on special for $1.50 per pound. does total cost vary inversely or directly with the number of pounds purchased? find the cost of 3.4 pounds of apples. a. inversely: $5.10 b. directly; $5.10 c. inversely: $2.27 d. directly; $2.27

Evaluate each expression. determine if the final simplified form of the expression is positive or negative -42 (-4)2 42