Roman has 2 red pencils in his backpack. if this is 25%of the pencils ,how meny pencils are in his backpack

What is the measure of x? 43° 86° 172° 344°

X= 3y - 6 2x - 4y = 8 solve the system of equations using substitution. a) (-12,-2) b) (15,7) c) (21,9) d) (24,10)

What is the base of the exponential expression of 4 to the power of 5