x-intercept: –3; y-intercept: –7
B.
x-intercept: –3; y-intercept: 7
C.
x-intercept: 7; y-intercept: –3
D.
x-intercept: 7; y-intercept: 3
Answer:
b
y7
x-3
Step-by-step explanation:
Write equations for both companies:
Company A = 80 + 0.30x
Company B = 20 + 0.50x
X = number of miles.
Set the equations to equal and solve for x:
80 + 0.30x = 20 + 0.50x
Subtract 0.30x from both sides:
80 = 20 + 0.20x
Subtract 20 from both sides:
60 = 0.20x
Divide both sides by 0.20:
x = 60 / 0.20
x = 300
The answer is 300 miles.
Answer:
-3
Step-by-step explanation:
(1/8)
= 1 - 8 ( recall 1 = 0)
= 0 - 8
= - 8 (change base to base 10)
= - (log 8) / (log 2) (now you can use a calculator)
= - 3
The log base 2 of , i.e., is -3.
In mathematics, the logarithm, denoted as "log," is an important mathematical function that represents the exponent to which a fixed base must be raised to obtain a given number. It is the inverse operation of exponentiation.
The logarithm function is typically written as , where x is the number for which we want to find the logarithm and b is the base. The base can be any positive number greater than 1, commonly used bases include 10 (logarithm to the base 10, often written as log(x)) and the mathematical constant e (natural logarithm, often written as ln(x)).
=
= -3.
So, is -3.
Learn more about log here:
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