Search 81,660 tutors

A toy tractor sold for \$231 in 1975 and was sold again in 1987 for \$455. Assume that the growth in the value V of the collectors item was exponential.   Find the value K of the exponential...

Pablo's Coffee Shop makes a blend that is a mixture of two types of coffee. Type A coffee costs Pablo \$5.50 per pound, and type B coffee costs \$4.30 per pound. This month, Pablo...

The sales of a certain product after an initial release can be found by the equation s=12 sqrt(4t)+10, where s represents the total sales (in thousands) and t represents the time in weeks after...

need problem equation

Andrea buys 4 shirts and 3 pairs of pants for \$85.50. She returns the next day and buys 3 shirts and 5 pairs of pants for \$115. What is the price of each pants and shirt?

Carla began her workout jogging for 3 miles then bicycling for 20 miles. She bicycled at a speed tht was 7 miles per hour faster than she jogged. She spent twice as much time bicycling as jogging...

etch clean graghics  use some clenser that is 25% acid and a secound that is 50% acid. How many liters of each should be mixed to get 30L of a solution that is 40% acid?

Could someone please work this out for me? I have a really tough time with word problems and this one has me stuck.     One positive integer is 3 units more than another. When...