Can someone help me with these I’m not asking for the answer but if u do give the answer thank u

Abee with velocity vector r'(t) starts out at (5, −5, −3) at t = 0 and flies around for 5 seconds. where is the bee located at time t = 5 if 5 0 r'(u)du = 0?

In δabc, if the length of side b is 3 centimeters and the measures of ∠b and ∠c are 45° and 60°, respectively, what is the length of side c to two decimal places?

Aline has a slope of 1/4 and passes through point (0.4,-1/2). what is the value of the y-intercept?