Search 80,733 tutors

A manufacturer produces two models of elliptical cross-training exercise machines. The times for assembling, finishing, and packaging model X are 3 hours, 3 hours, and 0.8 hour, respectively. The...

An investor has up to \$300,000 to invest in two types of investments. Type A pays 13% annually and type B pays 10% annually. To have a well-balanced portfolio, the investor imposes the following conditions...

Mr and Mr's Smith have three daughters.   When the youngest was born, you could multiply the middle child's age by three to get the oldest sister's age.   Nine years ago,...

With a substance initially at 20.00 degree C, 5.00 g of solid sodium nitrate was dissolved in 100.0 g of water in a calorimeter, and the temperature of the resultant solution was 14.80 degree C. The...

Don't really know what needs to be plugged into X and Y Yearly Salary b4 taxes = \$74,000 Monthly Salary = \$6,166.66 Car cost \$38,858 Bank A: y=1.25x+50 Bank B: y=1...

There is a sales tax of \$9 on an item that costs \$120 before tax. The sales tax on the second item is \$19.05. How much does the second item cost before tax?

After completing part of an online test, Chris had correctly answered 80% of the questions he'd attempted. Then, he answered 13 of the remaining 20 questions.

At the movie theatre, child admission is \$5.70 and adult admission is \$9.30 . On Saturday, 136 tickets were sold for a total sales of \$1041.60 . How many adult...

There are 180 spots in an auditorium but for every 2 adults there has to be one student. Prices are \$14.00 for an adult and \$7 for a student how do you get the most money from attendants.

Bella is planning to write in a journal. Some pages will have one journal entry on them and others will have two entries on them. If Bella wants to make 10 entries how many different ways can she...

A giant tortoise's top speed is about 1/5 mile per hot. Estimate how long will it take the tortoise to travel across its 420 foot habitat

A math test is worth 100 points and has 30 problems. Each problem is worth either 3 points or 4 points. How many 4-point problems are there?