Function x-ValueR = 51x − 1.5x2 x = 15How would i find the change in R?

Please show a step-by-step process of how you figured out that x = 1.81, please

Express the total revenue R as a function of the price p per item when q = -5p + 1200 OR = -5p? + 1200 OR = 5p? – 1200p - O R= -5p + 1200 OR= -5p? + 1200p

The function M(s) = 225 + 0.65s represents the material cost of manufacturing gardening scissors when s scissors are produced. The function L(s) = 54 + 1.15s represents the labor cost for producing s scissors. Which expression correctly represents the manufacturing cost per scissors?