Answer:
The rule for a rotation by 270° about the origin is (x,y)→(y,−x) .
200 min / $10.00 = 20 minutes / dollar
<span>300 min / $12.00 = 25 minutes / dollar </span>
<span>The cost of the 300 minute card is cheaper per minute and a better value. </span>
<span>If you don't expect to use more than 200 minutes then save your money and buy the smaller card.</span>
Answer:
Step-by-step explanation:
The pattern is easy to see.
Answer:
23
Step-by-step explanation:
Angle x and the two given angles form a triangle. The interior angles of a triangle add up to be 180.
so



Answer:
x=2 y=2
Step-by-step explanation:
Second: x=3 y=1.5