Step-by-step explanation:
Both are very correct,
because any number raised to the power of a negative
is given as
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99 POINTS AND IF CORRECT, WILL GIVE BRAINLYIST
2 answers:
Answer: The functions are both increasing.
The function for plan II has a greater unit rate.
The function for plan I has a greater y-intercept.
Step-by-step explanation:
According to the given question we have two functions.
Function 1.
Function 2.
Both are written in intercept form of linear equation , where m is the slope of line or rate of change of y w.r.t. x.
Slope of function 1. = 400
i.e. Unit rate = $400 per month
Slope of function 2. = 420
i.e. Unit rate = $420 per month
⇒The function for plan II has a greater unit rate.
As both has positive slopes.
∴ Both functions are increasing functions.
For y intercept , put x=0 in the functions.
The y-intercept of function 1 = $12000
The y-intercept of function 2= $11000
⇒The function for plan I has a greater y-intercept.
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Answer:
70 seconds
Step-by-step explanation:
Given that;
The initial velocity of the bullet fired = 1120 ft/s
Initial height h = 8 feet
The expression to determine how many seconds it takes the bullet to hit the ground is:
Thus;
Replacing the value of = 1120 and h = 0 (i.e. when h =0) in the above expression; we have:
= -16t² + 1120t + 8
mulitiply through by (-)
= 16t² -1120t - 8
Divide through by 8
= 2t² - 140t - 1
The above expression forms a quadratic equation.
where;
a = 2
b = -140
c = - 1
So, by using the quadratic formula , we have:
= 70
Thus, the time (in seconds) it took the bullet to it the ground = 70 seconds