What is the measure of

An equation of the line tangent to y=x^3+3x^2+2 at its point of inflection is

What expression is equivalent to 42x-56y

If two angles of a triangle have equal measures and the third angle measures 90°, what are the angle measures of the triangle? a. 60°, 60°, 60° b. 45°, 90°, 90° c. 30°, 30°, 90° d. 45°, 45°, 90°