There is a bag filled with 4 blue and 5 red marbles.
1 answer:
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Ok, a fun hack
if f⁻¹(a)=b then f(b)=a
so if f⁻¹(7)=b then f(b)=7
to find b, find x such that f(x)=7
7=0.5(3)^x
times both sides by 2 (or divide both sides by 0.5)
14=3^x
take log₃ of both sides
if f⁻¹(a)=b then f(b)=a
so if f⁻¹(7)=b then f(b)=7
to find b, find x such that f(x)=7
7=0.5(3)^x
times both sides by 2 (or divide both sides by 0.5)
14=3^x
take log₃ of both sides
Answer:
The algebraic expression for this problem is .
Step-by-step explanation:
Given:
15 students fit in a van and 3 students will be traveling in a car.
So we can say that;
Number of students travelling by van = 15
Number of students travelling by car = 3
Now Let the number of vans be 'x'.
also Let the number of cars be 'y'.
Let the Total number of students bayside middle school be 'T'.
Solution:
now we can say that;
Total number of students going on field trip is equal to sum of Number of students travelling by van multiplied by the number of vans and Number of students travelling by car multiplied by the number of cars.
framing in equation form we get;
Hence, The algebraic expression for this problem is .