Four times a number added to 3 times a larger number is 31. seven subtracted from the larger number is equal to twice the smaller number. let x represent the smaller number and y represent the larger number.

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

Marla bought a book for $12.95, a binder for $3.49, and a backpack for $44.99. the sales tax rate is 6%. find the amount of tax and the total she paid for these items

The bottom of ignacio's desktop is 74.5cm from the floor. ignacios sits in his adjustable chair, and the tops of his legs are 49.3cm from the floor. each clockwise rotation of the knob on the chair raises ignacio's legs by 4.8cm. write an inequality to determine the number of clockwise rotations, r, ignacio could make with the knob without his legs touching the desk.