Kindly help solve this questions

1. Which is not true of R-, the coefficient of determination ? It is the square of the coefficient of correlation. b. It is calculated using sums of squares (e.g., SSR, SSE, SST). c. It reports the percent of the variation in Y explained by X. d.) It is negative when there is an inverse relationship between X and Y.The Generator is a popular youth hostel in London located near Kings Cross. The hostel provides a bed, showers, and breakfast in their nightly fee. Suppose the quantity demanded is 0 when the price is $90 per night, and quantity demanded is 90 when the price is $10. Quantity supplied is 0 when the price is $10 and 100 when the price is $80. Adjust the graph accordingly. In equilibrium, how many beds are rented? 100 95( Number 90 85 50 beds 80 Supply What is the total surplus? Number Cost of per night 20000 Demand 10 20 30 40 50 60 70 80 90 100 Number of beds