Since he only makes commission on sales over $1000, he makes commission on $1500 (we find this by doing 2500-1000.) His commission is 15%, so find 15% of $1500:

So we know how makes $225 in commission.
Now we need to add this to his fixed pay to get his total pay:

So his total pay is $525, which is answer 'a'
Hope I helped, and let me know if you have any questions :)
Tip: use Slader (the app or the website) it gives you the anwsers and it tells you how to do it as well.
Answer:
D. multiplying the area of the base by the height
Calculate the area of the base (which is a circle) by using the equation πr². Then, multiply the area of the base by the height of the cylinder to find the volume.
Answer:
40 miles a day
Step-by-step explanation:
The difference in fixed charge is $20; the difference in mileage charge is $0.50 per mile. So it will take $20/$0.50 = 40 miles for the extra mileage cost to eat up the savings in fixed cost. At that mileage, both companies will charge the same amount:
A: 90 + 0.30·40 = 102
B: 70 + 0.80·40 = 102