Jake's Roof Repair has provided the following data concerning its costs:

$\backslash$table$[[,\backslash$table$[[$Fixed Cost$],[$per Month$]],\backslash$table$[[$Cost per$],[$Repair$-$Hour$]]],[$Wages and salaries,$$,20,500,$$$,15\mathrm{.}00],[$Parts and supplies,,,$$,7\mathrm{.}40],[$Equipment depreciation,$$,2,720,$$$,0\mathrm{.}45],[$Truck operating expenses,$$,5,730,$$$,1\mathrm{.}60],[$Rent$,$$$,4,670,,],[$Administrative expenses,$$,3,890,$$$,0\mathrm{.}50]]$

For example, wages and salaries should be $$20,500$ plus $$15\mathrm{.}00$ per repair$-$hour. The company expected to work $2,900$ repair$-$hours in May, but actually worked $2,800$ repair$-$hours. The company expects its sales to be $$47\mathrm{.}00$ per repair$-$hour.

Required:

Compute the company's activity variances for May. $($Indicate the effect of each variance by selecting $"$F$"$ for favorable, $"$U$"$ for unfavorable, and "None" for no effect $($i$.$e$.,$ zero variance$).$ Input all amounts as positive values.$)$