Suppose you need to know an equation of the tangent plane at a surface s at the point p(3, 1, 4). you don't have an equation for s but you know the following curves both lie on s. r1(t) = < 3 + 3t, 1 - t2, 4 - 5t + t2> r2(u) = < 2 + u2, 2u3 - 1, 2u + 2> find an equation of the tangent plane at p.

Frank has $66.50 in his account on sunday. over the next week, he makes the following changes to his balance via deposits and purchases: day debit ($) credit ($) monday 60.33 80.75 tuesday 54.45 wednesday 49.20 15.00 thursday 35.40 friday 16.85 75.00 saturday 80.56 on what day does frank first get charged an overdraft fee? a. wednesday b. thursday c. friday d. saturday select the best answer from the choices provided a b c d

How do i do this activity, is appreciated

For problems 29 - 31 the graph of a quadratic function y=ax^2 + bx + c is shown. tell whether the discriminant of ax^2 + bx + c = 0 is positive, negative, or zero.