What’s the answer to these??

If the wwight of a package is multiplied by 7/10 the result is 65.8 find the weight of the package

The length of a shadow of the building is 36m. the length of the pole, which is perpendicular to the ground, is 1.9m. the length of the pole's shadow is 1.52m. what is the height of the building?

Rewrite the following quadratic functions in intercept or factored form. show your work. f(x) = 3x^2 - 12