X = number of cds on the rack
x + 7 = 30
x = 30 - 7
x = 23 <== so there are currently 23 cds on the rack
Answer:

Step-by-step explanation:
Given:
For every 1/2 of an hour that the turtle is crawling, he can travel 3/20 of a mile
Question asked:
At what unit rate is the turtle crawling?
Solution:
As here<u> time taken is given</u> and the <u>distance traveled is also given </u>and hence we will apply speed and distance formula to find rate of crawling of turtle.
Time taken by turtle = 
Distance which can be traveled by turtle = 


Therefore, the rate at which the turtle is crawling is 
Step-by-step explanation:
D (-2,2)
:) good day
good day
Answer: She makes $550
Step-by-step explanation:
This is because to find the answer you do 10000t imes 5.5%
And 5.5% is 0.055
So you do 10000 times 0.055
Which is 550
You take 67.8/100×15
10.17
then take 15-10.17 the answer will be the wrongs u got
=4.83