Prove . ∀ ∈ ℤ, ∀ ∈ ℤ, ∃ ∈ ℤ, 2 + 2 = 2

In simplified exponential notation, the expression a^2•a^-3•a 1/a 0

Jabari is power washing houses for a summer job. for every job, he charges an initial fee plus $30 for each hour of work. his total fee for a 4 -hour job, for instance, is $170 . jabari's total fee,f, for a single job is a function of the number,t, of hours it takes him to complete the job. write the function's formula.

Worth 30 points! in this diagram, both polygons are regular. what is the value, in degrees, of the sum of the measures of angles abc and abd?