Answer:
x = -7
Step-by-step explanation:
Our function is 
. Notice that our possible roots are when x + 4 = 0 and when x + 7 = 0. So, our roots are -4 and -7.
However, the power above x + 4 is even, meaning the graph will simply <em>touch</em> the x-axis at x = -4, but not pass through. The power above x + 7, though, is odd, which means the graph will <em>cross</em> the x-axis.
Thus, the answer is x = -7.
Answer:
a) Unit price :
- 12 cupcakes for $29 = $2.42
- 50 cupcakes for $129 = $2.58
Reasoning:
- 12 cupcakes for $29 = $29 ÷ 12 cupcakes which gives 2.416666667 and if rounded off gives you $2.42.
- 50 cupcakes for $129 = $2.58 accurately.
b) 12 cupcakes for $29 gives the lowest unit price as $2.42 is less than $2.58.
<em>I hope this answer will help you !!!!</em>
Answer:
31
5 1/2 - 1 = 4.5
4+ 18= 22
2(4.5) = 9
22+ 9 = 31
Step-by-step explanation:
The solution is x>18.
The problem tells us that 3 less than a number: x-3
is more than 15. >15
So the inequality is x-3>15. When we isolate x to simply the inequality, we add 3 to both sides, to get x>18.
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The amount after time t will be given by simple interest formula given by:
A=prt/100
where:
principle,p=$175
rate, r=3.5%
time, t=5 years
thus the rate earned after 5 years will be:
A=(175*3.5/100*5)
A=$30.625
Answer: B] 30.65
