4. Determine whether each equation defines y as a function of x. a) x4 + y = 16
b) x2 + y2 = 100
c) x+y3 = 64

Each morning papa notes the birds feeding on his bird feeder. so far this month he has see. 59 blue jays, 68 black crows, 12 red robin's and 1 cardinal. what is the probability of a blue jay being the next bird papa sees

Solve for x and y: 217x + 131y = 913; 131x + 217y = 827

Solve the following inequalities and show the solution on a number line. 3/4 (2x-7) ≤ 5