A hot air balloon is at an altitude of 240 feet. The balloon descends 30 feet per minute. What equation gives the altitude y, in feet, of the hot air balloon after 3 minutes?

David started across a lake 15 miles wide in his fishing boat at 10 miles per hour. He had to row the rest of the way at only 5 miles per hour after his motor went out.

Which of the following is a possible consequence of sampling from a population? O Every sample from a population has a predetermined accuracy. O Sampling error can be eliminated if we have large enough samples.

Factor the GCF: -12x4y - 9x3y2 + 3x2y3 A. - 3x2y (4x2 + 3xy - y2) B. 3x2y (-4x2 + 3xy - y2) C. - 3 (4x2y + 3x3y2 - x2y3) D. - 3x2y (-4x2 - 3xy + y2)

An angle measures 16° more than the measure of its supplementary angle. What is the measure of each angle?

In a middle school with 200 students there are 40% girls. 20% of the students wear glasses. It is also known that 10% of the boys wear glasses. 1. How many boys are in this school? 2. How many girls don't wear glasses 3.

5x-5 + (6y-4) + 4x+10=180

Does the fraction 1/2 make the equation 1/34 + 8/17 = 1/2 true?

Remember that you can multiply by the reciprocal of the divisor when you divide by a fraction. find each quotient. simplify if possible 1. 1/3:2 2. 1/7:7 3. 1/2:8 4. 1/8:2

Draw a area model to solve the following. Find the value of the following expression. 30 * 60

15 nickels are stacked vertically how many inches tall is the stack