If f (x) and f⁻¹ (x) are inverse functions of each other and f (x) = 2x+5, what is f⁻¹ (8) ?

-1

3/2

41/8

23

The oldest child in a family of four children is twice as old as the yougest. The two middle children are 13 and 16 years old. If the average age of the children is 13.25. how old is the youngest child?

Matt has 80,000 in a savings account. The interest rate is 12% pre year and is not compounded. How much will he have in 4 months

Complete the statements about circle J. Arc M P is a and measures degrees. Arc M L N is a and measures degrees.

For what values of a are the following expressions true? a+5=5+a

What is a way to use the properties of similar triangles to find measurements

2 number cubes are rolled what is the probability that the first lands on an odd number and the second lands on an even number?

Write an expression for the sequence of operations described below. 7 less than the quotient of j and k Do not simplify any part of the expression.

Find the least common multiple of 6, 2 and 9

Mandy works construction. She knows that a 5 meter long metal bar has a mass of 40 kg. Mandy wants to figure out the mass (w) of a bar made out of the same metal that is 3 meters long and the same thickness. What is the mass of the shorter bar?

7x+2y=-13 -3x-8y=-23