Lee washes houses. it takes him 40 minutes to wash a one-story home, and he uses 18 gallons of water. power washing a two-story home takes less than 90 minutes, and he uses 30 gallons of water. lee works no more than 40 hours each week, and his truck holds 500 gallons of water. he charges $90 to wash a one-story home and $150 to wash a two-story home. lee wants to maximize his income washing one- and two-story houses. let x represent the number of one-story houses and y represent the number of two-story houses. what are the constraints for the problem?

Solve these problems: 1.what is the perimeter of an equilateral triangle with sides measuring 6cm? 2. a regular pentagon has sides measuring 3.2 cm. what is its perimeter? 3. a regular decagon has sides of 3.5mm . what is it’s perimeter? 4. a regular octagon has a perimeter of 64cm. what is the length of one of the sides? 5. a regular hexagon has a perimeter of 72mm . what is the length of one of the sides? 6. what is the perimeter of a rhombus with sides measuring 11m?

(50 ) mrs. julien’s and mrs. castillejo’s classes are selling cookie dough for a school fundraiser. customers can buy packages of macadamia nut chip cookie dough and packages of triple chocolate cookie dough. mrs. julien’s class sold 25 packages of macadamia nut chip cookie dough and 30 packages of triple chocolate cookie dough for a total of $221.25. mrs. castillejo’s class sold 5 packages of macadamia nut chip cookie dough and 45 packages of triple chocolate cookie dough for a total of $191.25. (a) write the system of equations that model the problem. be sure to explain which equation represents which situation. (b) find the cost of each type of cookie. show your work. (c) explain which method you used to solve the system and why you chose that method.

Multiply and simplify. 2x2y3z2 · 4xy4x2 how to do?