Cathy and helen were racing each other from the same point and running in the same direction. the distance that cathy runs(in meters), for every second t, can be given by a(t)=5t. and the distance in meters that helen runs, for every second t can be given by b(t)=4.5t . what is the distance in meters between them after they have raced 150 seconds? give answer to nearest whole number.

Isaac wants the equation below to have no solution when the missing number is placed in the box. which number should he place in the box?

You eat $0.85 for every cup of hot chocolate you sell. how many cups do you need to sell to earn $55.25

Find a parametrization for the curve「and determine the work done on a particle moving along γ in r3 through the force field f: r^3--r^3'where f(x,y,z) = (1,-x,z) and (a) im (γ) is the line segment from (0,0,0) to (1,2,1) (b) im (γ) is the polygonal curve with successive vertices (1,0,0), (0,1,1), and (2,2,2) (c) im (γ) is the unit circle in the plane z = 1 with center (0,0,1) beginning and ending at (1,0,1), and starting towards (0,1,1)