Ibuy 4 lb of olives black olives cost $3.00 a pound green olives cost $5.00 a pound i spend 15.50 how many pounds of ea h type of olives

Step-by-step explanation:

b + g = 4 b = 4 - g

3b + 5g = 15.50

3(4 - g) + 5g = 15.50

12 - 3g + 5g = 15.50

-3g + 5g = 15.50 - 12

2g = 3.50

g = 3.50 / 2

g = 1.75 < 1.75 lbs of green olives (or 1 3/4 lbs)

b + g = 4

b + 1.75 = 4

b = 4 - 1.75

b = 2.25 < 2.25 lbs of black olives (or 2 1/4 lbs)

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.

the forst and 3rd

step-by-step explanation: