Suppose a store sells ground beef for $5.00 per pound. At this price, they sell an average of 250 pounds of ground beef each day. When the store puts ground beef on sale for only $3.00 per pound, they sell 400 pounds of ground beef that day. Assuming a linear relationship between the price per pound of ground beef and the demand (in pounds), find a model for the d, the daily demand of ground beef as a function of p, the price in dollars for one pound.

Sam claims that cos x =sin y if x and y are congruent angels. is sam correct ?

Delbert keeps track of total of the total number of points he earns on homework assignments, each of which is worth 60 points. at the end of the semester he has 810 points. write an equation for delbert’s average homework score a in terms of the number of assignments n.

Ahigh-altitude spherical weather balloon expands as it rises, due to the drop in atmospheric pressure. suppose that the radius r increases at the rate of 0.02 inches per second, and that r = 36 inches at time t = 0. determine the equation that models the volume v of the balloon at time t, and find the volume when t = 360 seconds. v(t) = 4π(0.02t)2; 651.44 in3 v(t) = 4π(36 + 0.02t)2; 1,694,397.14 in3 v(t) = four pi times the product of zero point zero two and t to the third power divided by three.; 4,690.37 in3 v(t) = four pi times the quantity of thirty six plus zero point zero two t to the third power divided by three.; 337,706.83 in3