David works as a tile decorator for a ceramic tile factory. the amount of money he earns is directly promotional to the number of tiles her paints. when he paints 15 tiles, he earns $41.25. When he paints 25 tiles, he earns $68.75 a) Identity the constant of promotionality

b) How many tiles will David paint if he earned $99.00

Devonte is balancing his checking account. his account statement does not include a deposit of $107.00 that he made on november 1st. what is devonte’s actual account balance?

Consider the linear model for a two-stage nested design with b nested in a as given below. yijk=\small \mu + \small \taui + \small \betaj(i) + \small \varepsilon(ij)k , for i=1,; j= ; k=1, assumption: \small \varepsilon(ij)k ~ iid n (0, \small \sigma2) ; \small \taui ~ iid n(0, \small \sigmat2 ); \tiny \sum_{j=1}^{b} \small \betaj(i) =0; \small \varepsilon(ij)k and \small \taui are independent. using only the given information, derive the least square estimator of \small \betaj(i) using the appropriate constraints (sum to zero constraints) and derive e(msb(a) ).

What is the measure of minor arc dm?