Surface area of a cube with edge 3m

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.

What is the solution to the equation 9^(x+1) =27

Which table shows a proportional relationship between miles traveled and gas used?