Age at first marriage, part ii. exercise 4.16 presents the results of a 2006 - 2010 survey showing that the average age of women at first marriage is 23.44. suppose a social scientist believes that this value has increased in 2012, but she would also be interested if she found a decrease. below is how she set up her hypotheses. indicate any errors you see. h0 : ¯x = 23.44 years old ha : ¯x > 23.44 years old 4.21

Part a : solve -vp + 40 < 65 for v part b : solve 7w - 3r = 15 for r show your work .

Michelle and julie work at a catering company. they need to bake 264 cookies for a birthday party that starts in a little over an hour and a half. each tube of cookie dough claims to make 36 cookies, but michelle eats about 1/5 of every tube and julie makes cookies that are 1.5 times as large as the recommended cookie size. it takes about 8 minutes to bake a container of cookies, but since julie's cookies are larger, they take 12 minutes to bake. a. how many tubes should each girl plan to bake? how long does each girl use the oven? b. explain your solution process what did you make? c. what assumptions did you make?

Suppose you can spend at most $12. create an inequality that represents this restraint. then find at least three ordered pair solutions representing the number of boxes of candy and combos you can buy