Darla sells televisions. She earns a fixed amount for each television and an additional $30 if the buyer gets an extended warranty. If Darla sells 15 televisions with extended​ warranties, she earns $1,275. How much is the fixed amount Darla earns for each​ television?

Wich statement could be used to explain why the function h(x)= x^3 has an inverse relation that is also a function

Which of the following is the maximum value of the equation y=-x^2+2x+5 a. 5 b. 6 c. 2. d. 1

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) ).