The sides of a triangle are represented by the expressions 2x ^2+4 , 5x^2-6x and 8x+3 determine the perimeter of the triangle

F(x)=x/2-2 and g(x)=2x^2+x-3 find (f+g)(x)

Kyle and elijah are planning a road trip to california. their car travels 3/4 of a mile per min if they did not stop driving, how many miles could kyle and elijah drive in a whole day? ? 1 day = 24 hours. plzzz i will give you 100 points

Last month, a 770 g box of cereal was sold at a grocery store for $3.10. however, this month, the cereal manufacturer launched the same cereal in a 640 g box, which is being sold at $2.50. what is the percent change in the unit price?