Write (3 − 7i) − (-11 + 5i) as a complex number in standard form.

a) 14 − 12i
b) 14 + 12i
c) 10 − 6i
d) 14 − 2i

Which is the equation of an ellipse with directrices at x = ±4 and foci at (2, 0) and (−2, 0)?

Solve this equation using substitution. {4x + y = −2} {4x + 6y = 44}

Four quarts of a latex enamel paint will cover about 200 square feet of wall surface. how many quarts are needed to cover 98 square feet of kitchen wall and 52 square feet of bathroom wall