Cicumference is Πx diameter
3.14x5=15.70
2x-21=3y divide by 3. 2/3x-7=y. So at 7 it crosses
Answer: d≥200
Step-by-step explanation:
to get a 10% discount the shoppwe must spwnd at least 200 or more
Answer: i guess the problem is with P(x) => "x = 
", then P(x) is true if that equality is true, and is false if the equality is false.
so lets see case for case.
a) x = 0, and 
= 0. So p(0) is true.
b) x = 1 and 
= 1, so P(1) is true.
c) x = 2, and 
= 4, and 2 ≠ 4, then P(2) is false.
d) x= -1 and = 1, and 1 ≠ -1, so P(-1) is false.
