what is the upper limit of the class interval whose lower limit and class marks are 65 and 67.5 respectively​

Simplify 15(x - 4)(x -1)-3(x + 4)(x - 1) with steps

Which of the following quartic functions has x = –1 and x = –2 as its only two real zeroes?

Louis wants to carpet the rectangular floor of his basement.the basement has an area of 864 square feet.the width of the basement is 2/3 it's length. what is the length of louis's basement