Very important question i will give 50 points to whoever answers this question
1. refer to expression 1 and expression 2.
expression 1
6_7 - 3^2 _ 9+ 4^3

expression 2
5+4_2+6_2_2-1

(a) what is the value of expression 1?
(b) insert parentheses in expression 2 so that it has a value of 19. then show why your expression has a value of 19.

answer: on graphs, the open and closed circles, or vertical asymptotes drawn as dashed lines us identify discontinuities.

as before, graphs and tables allow us to estimate at best.

when working with formulas, getting zero in the denominator indicates a point of discontinuity.

when working with piecewise-defined functions, check for discontinuities at the transition points where one piece ends and the next begins.

step-by-step explanation: