Зу + 5х = 15
help me. pls :D

Write a function that matches the description. a cosine function has a maximum of 5 and a minimum value of -5. f (r) =

Complete the statements about the system of linear equation respresented by the tables the equation respented the left table is

65 8 7 4 5 6 8 4 3 2 1 9 5 6 4 2 1 6 5 1 5 1 3 2 3 5 multiply the third number in the first row by the seventh number in the third row. add this result to the fifth number in the second row. add to this total ten times the fourth number in the third row. subtract the eighth number in the first row from the result.