What is the sum of difference
1. 15b^5 + 22b^5
2. 19x^3 - 13x ^3
3. find the difference
(7a^5 + 3a^2 -5) - (7a^5 + 8a^2 -2)

i think is g(1)=-1.

hope that i can

for this case we have by definition, if two lines are perpendicular, then the product of their slopes is -1.

then, given the following line:

so,

we are looking for m_ {2}:

then, the line is given by:

we find "b" replacing the given point:

finally, the equation is:

option c

6 adults and 9 children went.

a + c = 15

12a + 9c = 153

12(6) + 9(9) = 153

72 + 81 = 153