B, 12.6 because on the chart in the “f” column, next to -4.5 is 12.6
Answer:
Option A
Step-by-step explanation:
Number of components assembled by the new employee per day,
N(t) = ![\frac{50t}{t+4}](https://tex.z-dn.net/?f=%5Cfrac%7B50t%7D%7Bt%2B4%7D)
Number of components assembled by the experienced employee per day,
E(t) = ![\frac{70t}{t+3}](https://tex.z-dn.net/?f=%5Cfrac%7B70t%7D%7Bt%2B3%7D)
Difference in number of components assembled per day by experienced ane new employee
D(t)= E(t) - N(t)
D(t) = ![\frac{70t}{t+3}-\frac{50t}{t+4}](https://tex.z-dn.net/?f=%5Cfrac%7B70t%7D%7Bt%2B3%7D-%5Cfrac%7B50t%7D%7Bt%2B4%7D)
= ![\frac{70t(t+4)-50t(t+3)}{(t+3)(t+4)}](https://tex.z-dn.net/?f=%5Cfrac%7B70t%28t%2B4%29-50t%28t%2B3%29%7D%7B%28t%2B3%29%28t%2B4%29%7D)
= ![\frac{70t^2+280t-50t^2-150t}{(t+3)(t+4)}](https://tex.z-dn.net/?f=%5Cfrac%7B70t%5E2%2B280t-50t%5E2-150t%7D%7B%28t%2B3%29%28t%2B4%29%7D)
= ![\frac{20t^2+130t}{(t+3)(t+4)}](https://tex.z-dn.net/?f=%5Cfrac%7B20t%5E2%2B130t%7D%7B%28t%2B3%29%28t%2B4%29%7D)
= ![\frac{10t(2t+13)}{(t+4)(t+3)}](https://tex.z-dn.net/?f=%5Cfrac%7B10t%282t%2B13%29%7D%7B%28t%2B4%29%28t%2B3%29%7D)
Therefore, Option A will be the answer.
The answer is 12.50 and equation is y=5.25p -3.25
Answer:
7x² - 6x - 18
Step-by-step explanation:
7x² - 6(x + 3)
multiply with -6
7x² - 6x - (6 × 3)
evaluate
= <u>7x² - 6x - 18</u>