Select the best estimate of the product of 68 x 32 = A 1,900
B 1,100
C 1,500
D 2,100

D because once you multiply those they will end up being subtracted

In the first triangle 80+20+p=180 (since sum of all angles of a triangle is 180)so p= 80also in second triangle 55+45+q=180 (since sum of all angles of a triangle is 180)so q=80so we can conclude that p=80 degrees q=80 degrees so p=q=80 degreeshence option b is correct

Element 17 is chlorine it is a group 7 element(halogen) and belongs to period 3 of the periodic table