Find the value of b if it is known that the graph of y=-3x+b goes through the point N (5,2)

Idon’t understand this.. will someone ? will mark brainliest along with 20 points.

Parks is wearing several rubber bracelets one third of the bracelets are tie dye 1/6 are blue and 1/3 of the remainder are camouflage if park swears to camouflage bracelets how many bracelets does he have on

If the discriminant if a quadratic equation is 4 which statement describes the roots?