4. Jennifer earned $50 from her part time job. She wants to put $15 of her earnings into a savings account. She spends $24.99, including tax, on a new hardcover book, but also wants to buy some new
bookmarks. If each bookmark costs $1.75, including tax, what is the maximum number of bookmarks
she can buy?

she should be able to buy 14 books i might be wrong i dont really know :/

Step-by-step explanation:

ok

step-by-step explanation:

x= -3 and

step-by-step explanation:

to find the roots of a cubic, use division or factoring to find the factors then set equal to 0. as this is a difference of cubes, it factors into

where a is the cube root of .

here   this is 27 and the cube root of 27 is 3. so we write using the form:

.

set each factor to 0 and solve for x.

x-3=0

x=3

the quadratic expression does not factor and must be solved using the quadratic formula.

where a = 1, b=3, and c=9

this cubic has two complex roots.