2 sides of a triangle are congruent. The base length is unknown. The top angle is 40 degrees and the bottom left angle is x degrees. What is the value of x? I need help with this as soon as possible. Thank you so much! :)

EDIT: I got it!!

Find the volume of the largest rectangular box in the first octant with three faces in the coordinate planes and one vertex in the plane x + 2y + 3z = 15.

Scale factor of 2 is used to enlarge a figure as shown below the area of is 18 in.²

The manufacturer of a new product developed the following expression to predict the monthly profit, in thousands of dollars, from sales of the productwhen it is sold at a unit price of x dollars.-0.5x^2 + 22x - 224what is represented by the zero(s) of the expression? a.the profit when the unit price is equal to 0b.the unit price(s) when the profit is equal to 0c.the profit when the unit price is greatestd.the unit price(s) when profit is greatest