Sarah was locked out of her apartment and the only way out is through a window three stories high 20 feet above the ground. She needed to borrow from one of her friends. There is a tree along the side of the house so she will need to put the ladder 15 feet from her apartment. How long does the ladder need to be to reach the apartment window?
Answer:
-6 & -2
Step-by-step explanation:
Check. Note that when you multiply two negative numbers, the answer will be positive:
-6 * -2 = 12
Note that when you add two negative numbers, if there is a positive & negative sign directly next to each other, you change it to a subtract sign:
-6 + (-2) = -6 - 2 = -8
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If you would like to solve 9 <= 17 - 4x for x, you can do this using the following steps:
9 <= 17 - 4x
4x <= 17 - 9
4x <= 8 /4
x <= 8/4
x <= 2
The correct result would be x <= 2.
Answer: D
If you look at the graph the slopes and y intercepts match up
So exponenetial growth or decay
it goes like this
f(t)=P(1+r)^t
r=rate of decay or grouth
if r>0 then it is grouth by r
if r<0 then it is decay
i
P=initial amount
so
given
f(x)=5500(1.65)^t
f(x)=5500(1+0.65)^t
0.65>0 so it is growing by 65%