Project #57401 - story problems and other math probelms. Please explain steps

You invested \$7000 in 2 accounts paying 6% and 8% annual interest. If the total interest earned for the year was \$520, how much was invested at each rate.

Write equation in slope intecept form

2x+7y=14

express the soulution set in the interval natation

X Greater then or equal to 10

You have \$ 7.80 in change. You have two more quaters than dimes but theee times as many nickles as quarters. How many coins of each type you have.

A cetain stoire has a computer avalible by its customers. The store changes \$5.00 the 1st hour and \$.70 for each subsequent hour. an inequlity to find the maxium number  hours than one can use the computer for  \$15.00

 Subject Mathematics Due By (Pacific Time) 02/11/2015 10:00 pm
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