How do you do this equation - 12 - a = 4a - 7

Lexie is making a scale drawing of a soccer field that is 120 yards long and 80 yards wide. If the field in Lexie's drawing is 30 centimeters wide, how long should the field be in the drawing?

Joe is 20 years old. His sister is half his age less 7. How old is his sister? I think the answer is 3 but I'm not sure

5.) Solve 2x-71 = 12. Be sure to show all of your work.

The value of y varies directly with x, and y = 12 when x = - 6. Find y when x = - 4. A. - 8 B. 8 C. 6 D. - 6

3x^2+30x+72 When does the minimum or maximum value occur?

Answer to 4 (x-3) + 5-x^2 for x=2

The ratio of students to teachers on a field trip is 13 to 1. 22 teachers are going, how many students are attending?

Solve the inequality for x. - 8x - 16 < - 72 A) x <7 B) x 7 D) x> 11

Jerry kitten grew 3cm between the age 4and 5 months. The kitten grew 2cm between the ages of 5 and 6 months. At 6 months the kitten is 19cm tall was jerry kitten at the age 4months

A pharmacist needs 20 liters of a 2% saline solution. She has a 1% solution and a 5% solution available. How many liters of the 1% solution and how many liters of the 5% solution should she mix to make the 2% solution?