Erica earns a rebate each month on her meals and movie tickets. she earns $3 for each movie ticket and $0.80 for each meal. last month erica purchased 15 meals and earned $18
solve this equation justifying each step with an algebraic property of equality

Solve this system of equations. 12x − 18y = 27 4x − 6y = 10

Look at the figure below: triangle abc is a right triangle with angle abc equal to 90 degrees. the length of ac is 5 units and the length of ab is 4 units. d is a point above c. triangle adc is a right triangle with angle dac equal to 90 degrees and dc parallel to ab. what is the length, in units, of segment cd?

Which graph represents the given linear function 4x+2y=3