Answer:
Step-by-step explanation:
For this case, the first thing we must do is define variables.
We have then:
x: number of years
y: total change in time (seconds)
We now write the equation that models the problem.
We know that each year the time decreases by 8 seconds.
Therefore, the equation is:
For the year number 5 we have:
Answer:
the total change in time is 40 seconds
X less than or equal to 8. This is because she can only have up to eight. To write the less than or equal to sign it is a less then sign with a line under it. Hope this helped!
Answer:
<u>A. (7x)³ + 8 ⇔ 8 added to the product of 7 and x cubed</u>
<u>B. 7x³ + 8 ⇔ 8 added to cube of 7x</u>
<u>C. 7 (x + 8)³ ⇔ 7 times the cube of the sum of x and 8</u>
<u>D. (7x + 8)³ ⇔ the cube of the sum of 7x and 8</u>
Step-by-step explanation:
1. Let's drag the tiles to the correct boxes to complete the pairs.
A. (7x)³ + 8 ⇔ 8 added to the product of 7 and x cubed
The second tile was already given and solved, however we're copying it.
B. 7x³ + 8 ⇔ 8 added to cube of 7x
C. 7 (x + 8)³ ⇔ 7 times the cube of the sum of x and 8
We use the expression 7 times because number 7 is multiplying the sum inside the parenthesis.
D. (7x + 8)³ ⇔ the cube of the sum of 7x and 8
-1 is your answer. Might want to double check it with some other answers.