What is the solution of the system? use substitution.

y = 6x + 2
3y - 18x = 12

a. infinitely many solutions
b. two solution
c. one solution
d. no solution

Zoe placed colored blocks on a scale in science class. each block weighed 0.8 ounces. the total weight of all the colored blocks was 12.8 ounces. how many blocks did zoe place on the scale? write and solve an equation to find the answer.

An object in geometry with no width, length or height is a(n):

Charlie tosses five coins.what is the probability that all five coins will land tails up.