If the computer costs $2150 and Melissa puts $150 away each month, how long will it take her
to save enough money to buy the computer?

Multiply −2x(6x^4−7x^2+x−5) express the answer in standard form. enter your answer in the box.

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.

Olga bought a new skirt that cost $20. sales tax is 5%. how much did olga pay, including sales tax? 7.