Alice invests $5000 in two certificates of deposit; the interest on the first certificate is 4%, and the interest on the second is 5%. let's denote the amount she invests in the first certificate by x. then the amount she invests in the second certificate is

.
the interest she receives on the first certificate is

,
and the interest she receives on the second certificate is

.
so a function that models the total interest she receives from both certificates is
y =

.

Empty box + box + empty box fill in the box is equal to 30 how

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?

Whats are the trickiest steps to do when adding or subtracting rational expressions? how does knowledge of rational numbers u in adding and subtracting rational expressions?