question 4 is A
question 5 is 43.6
question 5 showing work
how I would figure it out is 151-20 =131
then I would divide it by 3 for each day
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131÷3=43.6
6x + 3y = -9
3y = -6x - 9
y = -2x - 4.5
slope (m1) of this line is -2
slope of the perpendicular line,
m2 = - (1/m1)
m2 = - (1 / -2)
m2 = 1/2
1. multiply 1.6 by 2, resulting in 3.2
2. p < 4
Hope this helps!!
If the two equations in parenthesizes were there own equations which ones would equal 1 and 6
(x-1) or x=1
(3x-1) or x=1/3
3(x-1) or 3x-3 or x=1
Do you understand?