Answer:
the answer is b
Step-by-step explanation:
Answer:
a) How much Carl earns an hour? $15/h
b) Who earns more per hour? Carol
c) Graphed
Step-by-step explanation:
a) Carl earns $15 per hour.
Earnings per hour can be rewritten as earnings/per
Or earnings divided by hours.
Take a random pair of time and money earned:
$45/3h = $15/1h
Check it with another pair:
$75/5h = $15/1h
b) Carl earns more per hour.
His earnings can be modeled with the equation y = 15x. For every hour he works, he earned 15 dollars.
Louis's earnings are y = 12x, meaning he earns 12 dollars an hour.
15 > 12
c) See picture
Blue is Carl and red is Louis
Answer:
7
Step-by-step explanation:
Answer:
10.5 denarii
Step-by-step explanation:
Step 1: Initially Doubled his money in Lucca and spent 12 denarii
Let's assume the initial money he had before he did anything with it is x,
meaning if he doubled it in Lucca he would have (2×x)=2x, he then spent 12 denarii meaning he was left with (2x-12) denarii.
Step 2: In Florence he doubled what was left on leaving Lucca and spent 12
This is expressed as 2(2x-12)-12=4x-24-12=4x-36
(4x-36) denarii is what remained after he left Florence to Pisa
Step 3: In Pisa he doubled what was left on leaving Florence and spent 12 denarii
This is expressed as 2(4x-36)-12=8x-72-12=8x-84
Step 4: After getting back home in Pisa he was left with nothing
This is expressed as; 8x-84=0, 8x=84
solving for x by dividing both sides of the equation by 8
8x/8=84/8
x=10.5 denarii
The answer is 1.02 according to calculations