Answer:
Negative: (-∞,-3] and [1/2,-∞)
Positive: [-3,1/2]
Step-by-step explanation:
The derivative is the instantaneous rate of change at any given point for a function. Given this we know that anywhere the function is in the positive or negative direction, the derivative will also be in the positive or negative direction. We also know that wherever there is a peak or a trough, there will be no slope and it signifies a change in direction. For this function, this means the direction changes at -3 and 1/2.
Answer:
A.) Kathy starts each week with 108 phones to fix.
Answer:
55
Step-by-step explanation:
The cost of the youth-sized T-shirts plus the cost of the adult-sized T-shirts is less than or equal to Maria's budget.
45 ($4.50) + x ($6.25) ≤ $550
$202.50 + x ($6.25) ≤ $550
x ($6.25) ≤ $347.50
x ≤ 55.6
The most adult-sized T-shirts she can buy is 55.
..................................
It forms Obtuse angle......
