Four volunteers picked up litter from a park. Dominique collected 15 fewer pieces of litter than Sara. Sarah collected 12 more pieces of litter than piper. Piper collected 1/4 as many pieces of litter than everyone else combined. Let x represent the number of piece of litter Vaughn collected.

Evaluate the expression for the given value of the variable. 5×(h+3) for h=7

Simplify. −4x^2 (5x^4−3x^2+x−2) −20x^6−12x^4+8x^3−8x^2 −20x^6+12x^4−4x^3+8x^2 −20x^8+12x^4−4x^2+8x −20x^6+12x^4+4x^3−8x^2

Type the correct answer in each box. spell all words correctly. a sequence of transformations maps ∆abc onto ∆a″b″c″. the type of transformation that maps ∆abc onto ∆a′b′c′ is a . when ∆a′b′c′ is reflected across the line x = -2 to form ∆a″b″c″, vertex of ∆a″b″c″ will have the same coordinates as b′.