Yesterday, Jack drove 31/12 miles. He used 1 1/4 gallons of gasoline. What is the unit rate for miles per gallon?

What is the size of the matrix resulting from

Pick the expression that matches this description: a polynomial of the 5th degree with a leading coefficient of 7 and a constant term of 6 (choice a) 7x^5+2x^2+6 (choice b) 7x^6−6x^4+5 (choice c) 6x^7−x^5+5 (choice d) 6x^5+x^4+7

Divide the following fractions 3/4 ÷ 2/3 1/2 8/9 9/8 2