Answer:
7y4-28y3
Step-by-step explanation:
First you change the formation of the equation, so it looks like -7y3(-y+4). You use distributive property and when distribute the answer will be 7y4-28y3. Hope this helps!
Answer:
Step-by-step explanation:
f(x)=42-0.45(x) Solution 13.5 dollars expend in 30 Finishing nails
f(x)=42-0.60(x) Solution 18 dollars expend in 30 Common nails
Answer:
80
Step-by-step explanation:
Answer:
x ≥ 7
Step-by-step explanation:
First, put the same terms on the same side. So subtract 5 from both sides. You will get:
-3x ≤ -21
Divide both sides by -3 to get x alone. When dividing, the inequality sign will change to the opposite. So it will go from a (less than or equal to) sign to a (greater than or equal to) sign.
You will get:
x ≥ 7
Therefore, x will be a number that is greater than or equal to 7.