400 reduced by 3 times my age is 163. What is his age?

During their summer break from school. Hortencia and Alex decide to paint houses to earn money. Hortencia charges a flat rate of $350 per house that she paints, while Alex charges an hourly fee of $18 per hour.

Explain why a change from 20 to 40 is a 100% increase but a change from 40 to 20 is a 50% decrease.

Quadric formula to solve 9x^2+6x-17=0

What two whole numbers does 11/4 lie between

Two similar cylinders have volumes 125 and 216. The radius of the smaller cylinder is 3. Find the radius of the larger cylinder.

sierra is supposed to practice flute for a total of 5 1/4 hours every week. this week, she practiced 15 minutes on sunday, 1 hour on monday, 30 minutes on tuesday, 45 minutes on wensday, 15 minutes on tursday, and 45 minutes on friday.

What number is equivalent to 4.054

Solve each system by graphing. Y=2x

The square root of a number is between 18 and 19

What is the slope-intercept form of the function described by this table? x : 1, 2, 3, 4, y : 2, 7, 12, 17, Enter your answer below y = ? x + ? (Fill in the question marks with the numbers above in x and y section)