Answer:
15
Step-by-step explanation:
-a -8b
so you replace alphabets with the figures given
= -9 - 8(-3)
when you multiply two negatives they give you a positive hence;
= -9 +24
the answer is
= 15
-a -8b = -9 + 24 = 15
X = 5
number 2
educated guess
its 5 hours i think
y=3x+1=4
y=5x-1=4
DO THE MATH