The school is able to buy dozen roses for $9.36.the roses will be sold with a 150% markup. for what price the school sell 1 dozen roses

Write the equation for the parabola that has x− intercepts (−2,0) and (4,0) and y− intercept (0,4).

Dexter read 11 science fiction books and 5 history books. lena read 9 science fiction books and 4 history books. compare the students’ ratios of science fiction books to history books. 1. determine the ratios’ form:    science fiction books to history books 2. write the ratios as fractions:    dexter: 115; lena: 94 3. rewrite with a common denominator. 4. compare. 5. answer the question. determine which shows the correct comparison of the ratios for this problem.

X/y + 4y/x divided by x/y - 2y/x explain as in depth as you can how you simplfied the fractions. i don't know where to start on this : /