Suppose IQ scores were obtained for randomly selected sets of . The pairs of measurements yield x=97.76y=97.05,r=0.898 , P-value=0.000, and y=8.73+0.9x, where x represents the IQ score of the husband . Find the best predicted value of y given that the husband has an IQ of 108 ? Use a significance level of 0.05.

Suppose that the price p (in dollars) and the weekly sales x (in thousands of units) of a certain commodity satisfy the demand equation 4p cubedplusx squaredequals38 comma 400. determine the rate at which sales are changing at a time when xequals80, pequals20, and the price is falling at the rate of $.20 per week.

Can someone me out here number 4 plz

Dots sells a total of 279 t-shirts ($2) and shorts ($4). in april total sales were $670. how many t-shirts and shorts did dots sell?