Alonzo's coffee shop makes a blend that is a mixture of two types of coffee. type a coffee costs alonzo $4.20 per pound, and type b coffee costs $5.70 per pound. this month's blend used twice as many pounds of type b coffee as type a, for a total cost of $468.00 . how many pounds of type a coffee were used?

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The bottom of ignacio's desktop is 74.5cm from the floor. ignacio's sits in his adjustable chair, and the tops of his legs are 49.3cm from the floor. each clockwise rotation of the knob on the chair raises ignacio's legs by 4.8cm. write an inequality to determine the number of clockwise rotations, r, ignacio could make with the knob without his legs touching the desk