Here is what the answer to your question is:
7x10x1=70
Answer: 4 minus 12 x
Step-by-step explanation:

4 - 12x
Answer:
21
Step-by-step explanation:
y = 3x + 9
y = -3x + 12
y=21
7x20 = 140 making that the total amount of decrease per week. Hope this helps!
Answer:
n<1.3
Step-by-step explanation:
-2.5n+8.7>5.45
add -8.7 on both sides
-2.5n>-3.25
divide both sides by -2.5
n<1.3 (after division inequality sign changes)
answer of Q2 is -4 2/3
answer of Q3 is -2/9
answer of Q4 is -23/3
answer of Q5 is 2^2. 3^2.5