He would have to mow 14 lawns. To find the answer you would multiply 249.99 by 6%, then add the answer and round and you would get 264.99. 20 x 14 equals $280, so if he mowed 14 lawns and get $20 per lawn, he would buy the Mp3 and still have 15.01 leftover.
Hope this helps!
Answer: Ana will hit the water after 3 seconds.
Step-by-step explanation:
The exercise gives you the following function which models Anna's height above the water (in meters) after diving "x" seconds:

You can rewrite the function with
:

In order to calculate the number of seconds Ana will hit the water after diving, the procedure is:
- Substitute
into the function:

- Solve for "x".
By the Zero Product Property, you know that if
, then
or
.
Then you get:

- Choose the positive value (
)
Then, Ana will hit the water after 3 seconds.
Answer:
the value of x is 23..
Step-by-step explanation:
(5x+4)+(2x+15) = 180. [being supplementary angle]
7x+19 = 180
7x = 180-19
x = 161÷7
x = 23
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