Answer:
4 + 9x² + 1x³ + 12x⁵
Step-by-step explanation:
3x² + 6x² = (3 + 6)x² = 9x²
4 + 3x² + 8x³ + (-7x³ + 12x⁵ +6x²) = 4 + <u>3x² + 6x² </u> + <u>8x³ - 7x³ </u> + 12x⁵
= 4 + 9x² + 1x³ + 12x⁵
Answer: 75%
Step-by-step explanation:
The test had 32 questions and from these 32 you were able to get 24 questions right.
The percentage of questions you got right is the percentage of 32 that 24 is.
= Number of correct questions / Total number of questions * 100%
= 24 / 32 * 100%
= 75%
They will get to 90 feet at <u>half a minute</u> or <u>30 seconds</u>.
The value of home today is $ 424527.63
<em><u>Solution:</u></em>
Given that, Twenty years ago, Mr. Davis purchased his home for $160,000
Since then, the value of the home has increased about 5% per year
To find: Exponential function to find the value of home today
<em><u>The exponential growth function is given by:</u></em>

Where, "y" is the worth after "t" years
"a" is the initial amount
"r" is the rate of interest per year
From given information,
a = 160000
t = 20 years

Substituting the values we get,

Thus the exponential function is found
Let us find the value

Thus the value of home today is $ 424527.63
The answer will be/is 0,1