Hi there!
Let's first determine the x-intercept. When dealing with an x-intercept we must realise the y-coordinates equal 0.

Add 21 to both sides.

Divide both sides by -2.

Therefore, the x-intercept is the point (10 1/2; 0).
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Now let's continue with the y-intercept, which is easier. When dealing with an y-intercept we must realise the x-coordinates equal 0.

Therefore, the y-intercept is the point (0; -21).
Money! Cents are technically decimals of dollars (a whole number). I hope I helped ^^
Because ratios can be written as fractions

172 =

172 -

=

76.44 mulch = x amount of gravel = 172
Gravel = 172 - 76.44
= 95.56
(A) (B)
4------------------7
4------------------7
4------------------7
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Total (A)=4+4+4=12
Total (B)=7+7+7=21
Total (A) + Total (B)=12+21=33
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(4+7)+(4+7)+(4+7)=11+11+11=33
First, add all of the minutes together. You would get 75 minutes of practice per day.
Then you multiply 75 by 7, and you get 525 minutes.
He practices 525 minutes (or 8.75) hours per week