Sam buys 6 pencils and 5 erasers for a total cost of $1.60. Sally buys 3 pencils and 3 erasers for a total cost of $0.90. How much does one ERASER cost?

Solve with work both bert and ernie received an increase in their weekly salaries. bert's salary increased from $520 to $520. ernie's salary went from $580 to $645. find the percent of increase for each salary. what was the larger of the two percents ?

What is the x-intercept and y-intercept of the equation 2x+1. 2o

Aadc is formed by reflecting aabc across line segment ac, as shown in the figure. if the length of ac is 4 units, the area of aadc is square units.