Answer:
The slope is 3500, and it is the amount she gets each year for her annual raise.
Step-by-step explanation:
This can be solved using the formula for t test which is = x - mu over standard deviation divided by the square root of the number of samples. In this case, it is 1185 - 1200 over 70 divided by square root of 100 which give us a value of 2.14 which is equal to .9839 in area. Only rarely, just over one time in a hundred tries of 100 light bulbs, would the average life exceed 1200 hours.
a. There's a restaurant that charges $35 just to get inside plus $2.50 per hour.
b. The rate of change is 2.5. The meaning is each hour you're in the restaurant, they charge you $2.50.
(4x - y)/(2y + x) = (4(3) - 3)/(2(3) + 3) = (12 - 3)/(6 + 3) = 9/9 = 1
