Luis spent $55 buying songs and movies at an online store that charges $1.25 for each song and $2.75 for each movie. He purchased a total of 26 songs and movies combined. Create a system of equations used to determine how many songs and movies he would need to buy. Then find how many songs and movies he purchased.

Astudent draws two parabolas on graph paper. both parabolas cross the x-axis at (-4, 0) and (6,0). the y-intercept of thefirst parabola is (0, –12). the y-intercept of the second parabola is (0-24). what is the positive difference between the avalues for the two functions that describe the parabolas? write your answer as a decimal rounded to the nearest tenth.

Given: circle o, cd is diameter, chord ab || cd. arc ab = 74°, find arc ca.

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