I need help on this asap

For the equation below, x is the input and y is the output. y = -4x + 3 if the input is -8, then the output is

5,600 x 10^3 = a) 560 b) 5,000,600 c) 5,600,000 d) 56,000

Gail is making costumes for a school play. each rabbit costume needs one and one half yards of white fur fabric, a yard of blue striped fabric, and a quarter of a yard of pink felt for the ears. g? ail needs to make eight rabbit man yards will she need, for the white fur fabric, blue striped fabric, and pink felt?