Seven year old Sarah has 9 crayons; 3 blue, 1 red, 2 green and 3 yellow. a) In how many ways can she line up the crayons on her desk?

b) She is to pick up some of the crayons. How many different choices of some
crayons could she make?

c) How many choices are there if at least one green crayon should be included?

The average hourly earnings for a construction worker is projected to be $24.50 in 2012. jason wants to join the construction work force after he graduates in 2012. his friend tells him that average hourly earnings for construction workers will rise by 2% from 2009 to 2012. based on the data below, assuming that the projected hourly earnings are correct, is jason’s friend’s statement accurate? construction industry - average hourly earnings, 2000-2009 a. his friend’s statement is accurate. the average hourly earnings will increase by 2%. b. his friend’s statement is not accurate. the percent increase will be more than 2% c. his friend’s statement is not accurate. the percent increase will be less than 2% d. his friend’s statement is not accurate. the average hourly earnings will decrease

Arectangle has a width of 9 units and length of 40 units. what is the length of a diognal. a. 31 unitsb. 39 unitsc. 41 units d. 49 units

Twice the sum of a number and 4 is equal to three times the difference of the number and 7. find the number.