please can someone help me :( i just need to know which two numbers make 30 but one of them is 2 more than the other

Christine went shopping and bought each of her six six nephews a? gift, either a video costing? $14.95 or a cd costing? $16.88. she spent ? $ 97.42 97.42 on the gifts. how many videos and how many cds did she? buy?

Apatient is given 50 mg dose of medicine the medicines effectiveness decreases every hour at a constant rate of 40% what is the exponential decay function that models this scenario how much medicine will be left in the patients system after 2 hours

Acylinder and its dimensions are shown. which equation can be used to find v, the volume of the cylinder in cubic centimeters?