What does a ⊥ c the upside-down t mean? (this is from geometry)

The heaviest 16% of all men in weight weigh more than how many pounds ?

Write each fraction as an equivalent fraction with a denominator of 120then write the original fractions in order from samllest to largest

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.