Answer:
x = -8 and x = 4
Step-by-step explanation:
given
f(x) = (x+8) (x - 4)
recall that at any point on the x-axis, y = 0 [i.e f(x) = 0]
hence to find where the graph crosses the x-axis, we simply substitue f(x) = 0 into the equation and solve for x
f(x) = (x+8) (x - 4)
0 = (x+8) (x - 4)
Hence
either,
(x+8) = 0 ----> x = -8 (first crossing point)
or
(x-4) = 0 ------> x = 4 (second crossing point)
Hence the graph crosses the x-axis at x = -8 and x = 4
Answer:
a.) 32 miles per gallon
divide by two to get one gallon
b.) She can go 32 miles on one gallon
use the info from part a
c.) 384 miles
multiply 32 by 12 to get 12 gallons
Answer:
6x + 7y +84
Step-by-step explanation:
Answer:
-3/2 < x < 5......................
The sales tax rate is 5%.
Step-by-step explanation:
Given,
Sales tax for an item = $24.50
Cost of item before tax = $490
Sales tax rate = 
The sales tax rate is 5%.
Keywords: sales tax, percentage
Learn more about percentages at:
#LearnwithBrainly
