You have $3.20 in quarters and dimes. you have four fewer quarters than dimes. what would the associated system of equations look like in augmented matrix form?

10% of 1,900,000. show me how you got the answer

22. catie is starting a babysitting business. she spent $26 to make signs to advertise. she charges an initial fee of $5 and then $3 for each hour of service. write and solve an inequality to find the number of hours she will have to babysit to make a profit. interpret the solution.!

Find the rate of change for the situation.you run 7 miles in one hour and 21 miles in three hours.