Find 18.5% of 500- I couldn’t seem to figure this one out for some reason I dunno

Scarlet bought three pairs of sunglasses and two shirts for $81 and paula bought one pair of sunglasses and five shirts for $105 what is the cost of one pair of sunglasses and one shirt?

Find the value of p for which the polynomial 3x^3 -x^2 + px +1 is exactly divisible by x-1, hence factorise the polynomial

What is the perimeter of an equilateral triangle if each side is (x+3)?