Pond depth. On July $1,$ Garrett's Pond was $25ft$

deep. Since that date, the water level has dropped

$\frac{2}{3}ft$ per week. For what dates will the water level not

exceed $21ft?$

Blueprints. To make copies of blueprints, Vantage

Reprographics charges a $$6$ setup fee plus $$4$ per

copy. Myra can spend no more than $$65$ for the

copying. What numbers of copies will allow her to

stay within budget?

Banquet costs. The women's volleyball team can

spend at most $$450$ for its awards banquet at a

local restaurant. If the restaurant charges a $$40$

setup fee plus $$16$ per person, at most how many?

please do Q$\mathrm{.}47$ please. Thank you!