When it comes to angles, a supplementary angle adds up to 180 I need to know what the value of x is and figure out if the answer will add up?

2x+10 and 3x
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Tod does not have any cookies. david gives jeff 8 cookies. then he splits half of the cookies he has left with tod. david let’s c represent the number of cookies that he starts with. he finds the number of cookies that tod has is 1/2 the difference of c and 8. write an expression to represent the number of cookies that tod has.

Give the functions f(x) = |x + 2| - 3, what is the domain? a,b,c, or d all real numbers x > 2 x < -2 all real numbers and x cannot equal to 2

Astraight water slide is 175 feet above ground and is 200 feet long. what is the angle of depression to the bottom of the slide?