Answer:
f(-3)=56
Step-by-step explanation:
When evaluating a specific input for a function, you just plug that input in for x.
So in this case, f(-3)=5(-3)^2-2(-3)+5
f(-3)=5(-3)^2-2(-3)+5
f(-3)=5(9)+6+5
f(-3)=45+6+5
f(-3)=56
X² + x + ...m
x² + x + 1/4
\/x² = x
\/(1/4) = 1/2
2*x*1/2 = 2x/2 = x
x² + x/2 + 1/4
Jessie needs 27 supporters in order to reach his goal.
Step-by-step explanation:
Given,
Amount to be collected by Jessie = $150
Jessie's contribution = $15
Amount to be asked from each person = $5
Let,
x be the number of people who contribute.
Jessie's contribution + 5*Number of people who contribute = Total amount
15+5x=150
Subtracting 15 from both sides
Dividing both sides by 5
Jessie needs 27 supporters in order to reach his goal.
Keywords: linear expression, division
Learn more about division at:
#LearnwithBrainly
Step-by-step explanation:
we have a function, when for every valid x value we get exactly one y value (not 2 or more, not 0, but exactly 1).
x×7 = y⁴
7x = y⁴
y = 4th root(7x)
the 4th root is the square root of the square root.
so, we know, only positive x-values are valid.
but, even when restricting it to positive x-values, a square root as a 4th root (any even grade root) has a positive and a negative solution for the same x-value.
e.g.
x = 7³ = 343
7×343 = 2,401
the 4th root(2,401) = +7 and -7, as +7⁴ = 2,401, and -7⁴ = 2,401.
so, we have 2 different y-values assigned to most x-values (only exception is x=0), and this is therefore not a function.