Answer:
1.) a. i) f(4) = 2, ii.) f(-3)= -5 b.) x = -5, x = 2, c.) choice(2) -3 < x < 5
Step-by-step explanation:
Each problem
1.) a.) i.) we see f(4) = 2 on the graph the line goes through point (4, 2)
a.) ii.) f(-3) = -5
1.) b.) There are only 2 zeros for f(x) which intersect the x-axis in only 2 points.
x = -5 and x = 2 are the only 2 zeros.
1.) c.) only for -3 < x < 5 is the function f(x) increasing.
choice (2.)
The factored form of a polynomial is comprised of factors in which the sum is equal to the coefficient of the second term and the product is equal to the coefficient of the third term. In this case, the factors of x2 + 3x - 4 = 0 are 4 and -1. hence the answer is B. <span>(x - 1)(x - 4) = 0</span>
Answer:
Yes you're right, it does
Dewayne wants to know how many feet an object can travel in an hour.
Let's use an example. If we want to measure the speed in steps per minute,
We would need to collect the number of steps we travel (which is essentially the distance or length) in one minute (which is an unit of time).
Say that we make 25 steps in a minute, we divide those quantities and get that our speed was 25 steps/1minute = 25 steps/min
So, Dewayne needs to collect the distance (in feet) the object traversed in the period of an hour.
Answer:
The amount of money that Lexi had at the beginning was $131.25
Step-by-step explanation:
Let
x -----> amount of money that Lexi had at the beginning
y -----> amount of money that Maria had at the beginning
we know that
x+y=250 -----> equation A
(1-2/5)x=y-40
(3/5)x=y-40
y=(3/5)x+40 ----> equation B
substitute equation B in equation A and solve for x
x+(3/5)x+40=250
(8/5)x=250-40
(8/5)x=210
x=210*5/8
x=$131.25
