Kathy is twice as old as Mary. Kathy is 2 yrs younger than Jon. The sum of all three ages is 77. How old is Kathy?

You need to arrange four of your favorite books along a small shelf. How many different ways can you arrange the books assuming the order of the books make a difference

What multiplier do i use to increase an amount by 70%

For what values of x is the rational expression below undefined? Check all that apply. x+8/x^2-2x-24 A. - 6 B. - 8 C. 8 D. 6 E. 4 F. - 4

Is theres 10 birds and i shoot 1 how many is there left?

In the number 0.02415 where is the 4 located?

What is the answer to 3n + 3 = 27

The mean of 3 consecutive terms in an arithmetic sequence is 10, and the mean of their squares is 394. What is the largest of the 3 terms?

A race at travels at a rate of 205 mph how far would it travel in 3 hours?

What is 8/20 of an hour

An actor invests some money at 9 % simple interest, and $24,000 more than three times the amount at 10 % simple interest. The total annual interest earned from the investment is $38,670. How much did he invest at each amount? Use the six-step method.