The sum of 5 times a number and 7 equals 8

Which ordered pair is a solution of the equation? y + 5 = 2(2+1) choose 1 answer ® only (5,10 ® only (-1,-5) © both (5, 10) and (-1,-5) 0 neither

Which of the following is the result of expanding the series

If y varies directly as x2 and y=6 when x=6, find the constant of variation.