Need asap the equation yˆ=−2.5x+222.5 models the amount of cholesterol, ldl , for a person, in mg/dl , where x is the time spent exercising per day, in minutes. according to the regression equation, what is the amount of cholesterol for a person exercising 20 minutes a day? a. 61.5 mg/dl b. 81.5 mg/dl c. 172.5 mg/dl d. 272.5.5 mg/dl

The school that imani goes to is selling tickets to the annual dance competition. on the first day of the ticket sales the school sold 7 adult tickets and 5 child tickets for a total of $96. the school took in $40 on the second day by seling 3 adult tickets . find the price of an adult ticket and the price of a child ticket. solve by using substitution elimination college prep algebra math heres the 2 equations i came up with 7x+5y=96 and 3x+2y= -40 show all workiv be stuck on this.

The figure below shows rectangle abcd and the triangle eca on a coordinate plane.which of the following expressions represents the perimeter of triangle of triangle eca in units

The product of sin 30 degrees and sin 60 degrees is same as the product of