Which properties justify 2x+3x+12=5x+12

Devon checked a web site that gave daily updates on distances from Earth. He found that Pluto was 31.514 astronomical units (AU) from Earth. One AU = 149,600,000 kilometers.

Adriana picked 25 berries. Ellie picked 21 more berries than Adriana. How many berries did they pick in all?

What is the answer to f (x) - 3x^2-2

Jenae is sewing a quilt for her grandmother. She decides the area of the quilt will be x² + 18x + 80 square inches. If the length of the quilt is (x + 10) inches, what is the width? Explain how you know in a complete sentence.

Write the equation of the line given the slope and he y-intercept. Type your answer in the box, in the slope-intercept form, without skipping any spaces. m=-4, y-intercept (0,3)

A new product price is increased from $7 to $11. What is the percent of change rounded to the nearest whole?

Who is the 18 president of the United States

Zack says that the probability of rolling a number less than 4 on a six-sided number cube is 4/6. Valeria says that the probability is 3/6. Who is correct? Explain.

The unit price of hot dogs is $0.50/hot dog. How much will 12 hot dogs cost?

The formula to convert °F to °C is C = 5/9 (F - 32). 50°C = 122 °F Why do you multiply 50 by the reciprocal of 5/9