Aballoon is 30 yards above the ground. it starts to float upwards, and the altitude increases at a rate of 5 yards per minute. enter the altitude, in yards, of the balloon after 20 minutes.

What is the equation of this graphed line? enter your answer in slope-intercept form in the box.

Acompany charges $0.10 for each letter engraved. bobby plans to spend no more than $5.00 on the engraving on a jewelry box. write and solve an inequality to find the maximum number of letters he can have engraved.

Asquare and an equilateral triangle have the same perimeter. each side the triangle is 4 inches longer than each side of the square. what is the perimeter of the square