Evaluate the line integral f · dr, c where c is given by the vector function r(t). f(x, y, z) = x i + y j + xy k, r(t) = sin(t) i + cos(t) j + t k, 0 ≤ t ≤ π

John bought 5 lemons and used 2 of them for a salad how much did he use for.a salad . he used % of the lemons.

Afruit stand has to decide what to charge for their produce. they need $10 for 4 apples and 4 oranges. they also need $15 for 6 apples and 6 oranges. we put this information into a system of linear equations. can we find a unique price for an apple and an orange?

Solve each quadratic equation by factoring and using the zero product property. 14x - 49 = x^2