Simplify

4
x
2
+
5
x
−
3
x
2
+
2
y
−
3
x
+
2
y
2

Let the closed interval [a , b] be the domain of function f. the domain of f(x - 3) is given by (a) the open interval (a , b) (b) the closed interval [a , b] (c) the closed interval [a - 3 , b - 3] (d) the closed interval [a + 3 , b + 3]

How many $20 bills do you need to have to make $280

In the sixth grade 13 out of 20 students have a dog if there are 152 sixth grade students how many of them have a dog