7.
Evaluate f(x) = -2x - 5 for x = 3.
A. 1
B. 11
C. –6
D. –11
1 answer:
I think the answer is d. -11
Explanation:
Replace the variable x with 3 in the expression.
f(3)=-2•3-5
Multiply -2 by 3
f(3)=-6 -5
Subtract 5 from -6
f(3)= -11
Then the answer should be -11.
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Answer:
5000 and 100
Step-by-step explanation:
The answer is B because its is
Sas......................
let a be aluminum and g be gold and k how many times:
2*10⁻¹mg a+ 6*10¹mg g= 154 lb
so a=kg
k=a/g
k=2*10⁻¹/6*10=1/300
a=1/300g
so Aluminum is 1/300 of gold.
