For what value of x is this equation true?
-8 = x/4 - 4
plz : )

x=-16

Step-by-step explanation:

First, you add positive 4 to both sides to elimate the negative 4.

now, your equation should be

-4=x/4

Now, you multiply each side by positive 4 to undo the division

now your equation should be

-16=x

therefore

x=-16

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.

step-by-step explanation:

20% of 120 is 24. if you subtract 24 from 120 you get 96