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A shopkeeper mixed a herb worth \$2.50 a kg with another herb worth \$3.50 a kg. He sold 20kgs of the mixture at \$2.8 per kg. Find the weights of the two different herbs e mixed together.

Joanne sells? silk-screened T-shirts at community festivals and craft fairs. Her marginal cost to produce one? T-shirt is \$ 3.50. Her total cost to produce 50 ?T-shirts is \$ 255, and she sells them...

Andrew challenges his teacher to have a race with his cousin which is Usain Bolt and he says if he wins he has to give him an A in math. If he doesn't he'll make up all his homework. 15 seconds after...

Bridget went fishing with her dad. Bridget caught the first fish of the day, and it weighed f ounces. That day, she caught four more fish. One was 2 times the weight of the first fish, another was...

Acompany can make a total of 20 solar heaters for \$13900 while10 heaters cost \$7500 .Write a linear equation for the total cost as a function of the number of heaters produced .

Cody westmoreland wishes to sell a piece of property for \$240000. He wants the money to be paid off in 2 ways-- a short term note at 2% interest, and a long term note at 2.5% interest. Find the amount...