The piecewise function f(x) has opposite expressions.

f(x) = startlayout enlarged left-brace 1st row 1st column 2 x minus 1, 2nd column x less-than 0 2nd row 1st column 0, 2nd column x = 0 3rd row 1st column negative 2 x + 1, 2nd column x greater-than 0

which is the graph of f(x)?

on a coordinate plane, a piecewise function has 2 lines. the first line goes through (negative 3, 4) and goes down to a closed circle at (negative 1, 0). the second line has a closed circle at (1, 0) and goes up through (3, 4).

on a coordinate plane, a piecewise function has 2 lines. the first line goes up through (negative 3, negative 4) to a closed circle at (0, 2). the second line has a closed circle at (0, 2) and goes down through (3, negative 4).

on a coordinate plane, a piecewise function has 2 lines. the first line goes up from (negative 2, negative 5) to a closed circle at (0, negative 1). the second line has a closed circle at (0, 1) and goes down through (2, negative 3).

on a coordinate plane, a piecewise function has 2 lines. the first line goes down through (negative 1, 3) to a closed circle at (0, 1). the second line has a closed circle at (0, negative 1) and goes up through (2, 3).

On a coordinate plane, a piecewise function has 2 lines. The first line goes up from (negative 2, negative 5) to a closed circle at (0, -1). The second line has a closed circle at (0, 1) and goes down through (2, -3).

Step-by-step explanation:

Let's visualize this piecewise function, or function by parts.

Piecewise function is a function where each piece of function describes a behavior, i.e. returning another value depending on the input value.

Piecewise functions are pretty useful when we study limits.

According to the description given, the 3rd. option matches the graph. The second behavior (0,0) we'll describe it as a point.

C or the third graph

Step-by-step explanation:

linearly: 8560 bacteria

exponentially: approximately 75233 bacteria

step-by-step explanation:

assuming it is not exponential (we would have some really complicated logarithms), let's say it is linear. then, after 5 hours, it increased by 1200 bacteria, so every hour it increases by 240 bacteria. this means that after 19 hours, we get 19 * 240 + 4000 bacteria or 3800 + 760 + 4000 = 7800 + 760 = 8560 bacteria.

because it says round your answer, i will do this exponentially (with a calculator, of course). first, we need to find how much it multiplies by every hour, by taking the 5th root of 52/40 or 13/10. this is approximately 0.167. we still need to add 1 to this, because we are multiplying by that number, not adding that amount of the number. now, we just calculate 4000 * (1.167)^19. use a calculator to get approximately 75232.6, or 75233.

answer: ask

step-by-step explanation: