The expression 60(1+x) represents the total bill including the tip. what do the different parts of the expression represent? match each expression to the correct description. 1) cost of meal __ 2) tip percentage __ 3) number of friends __ a) xb) (1+x)c) 60

1) Option c

2) Option b

3) Option a

Step-by-step explanation:

Given : The expression 60(1+x) represents the total bill including the tip.

To find : What do the different parts of the expression represent?

Match each expression to the correct description.

1) Cost of meal __

2) Tip percentage __

3) Number of friends __

Solution :

The expression represents the total bill including the tip is 60(1+x).

When we see the expression,

The cost of the mean is always fixed.

So, Cost of the meal is 60.

Number of friends is unknown.

So, Number of friends is 'x'.

The tip percentage is given by '1+x'.

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.