Directions: o Places answers to questions in the spaces/coordinate system provided. o Be sure to answer all parts of the question, if applicable. I Show all work and don't forget to label units where necessary I On any of the graphs be sure to clearly show any points used to form your graph, as well as any necessary scaling. - If any scrap paper is needed, use the backs of sheets and label the work clearly. Label the following as consistent, inconsistent, or dependent. (3 points) 1) 1al 1b) 1C) 2) Solve the following system of equations by graphing (6 points): y = 73x + S x + 4y : 7 a .. e H. 2) 3) Solve the following system of equations by substitution (6 points): )1 : 73x + S x + 4y : 7 3) 4) Solve the following system of equations using the addition/elimination method (6 points): v 7'1v 4 l: 4) Solve the following system of equations using the addition/elimination method (5 points): y : 73x + S x + 43/ : 7 4) Solve the following system of equations using any method you choose (6 points each): 5) 3x 7 y : 6 6x 7 23/ = 25 5) 6) 6X73y=18 2y24x12 6) 7) y:x+5 yz' z:3x+2 7) 8) 4x6y:24 2x:7y74 8): Solve the system of equation with 3 variables (12 points): 9) x72y+32: 77 2x 7 y 7 z : 7 74x+3y+22:714 Choose ONE of the two word problems to solve (Cross out the one you do NOT want graded or the first will be graded regardless) (10 points)' 10) On an algebra test, a total of 50 students had grades of B or C. There were 10 more students with CS than 8'5. Find the number of students who had a B and the number of students who had a C. 10) 11) A mixture of 10% NaOH is needed in a chemistry lab, however only 4% NaOH and 20% NaOH are available in the lab. How much ofthe 4% NaOH solution and how much of the 20% NaOH solution should be mixed to obtain 10mL of the 10% NaOH solution? 11) Solve the following inequalities, and express answers in interval notation (5 points each): 123375x>6+2x+19 12) 13)6(;r+7) 5x+4 13) Determine A U H & A n H from the following (4 points): 14) A :{2,l,0,1,2 B :{71,l,2,3,1} 14) A U B A n B Solve the following absolute value (6 points): 15)l2x+372:7 15) Solve the absolute value inequality (7 points). IBHSX71IZl7 15H2x+37227 15) Solve the absolute value inequality (7 points). 1638261217 16) Solve the following Z-variable inequality (HINT: solving is shading) (6 points): 17lyij+7 EXTRA CREDIT: Solve the following Z-variable system of inequalities (4 points): 18l3x+2y>8 x5y