Jack made $30 mowing lawns in may and $72 mowing lawns in June. By what percent did the amount of money jack made mowing lawns increase from may to June?

Q-r=r, for r formula for the variable

The cost to mail a package is $7 for the first 2 pounds and 30 cents for each additional ounce. Which of the following functions represents the cost to mail a package if x is the number of ounces over 2 pounds? ƒ (x) = 7 + 0.3x ƒ (x) = 14 + 0.

Triangle ABC is congruent to triangle DFE. Find x.

The table below shows the approximate height of a ball thrown up in the air after x seconds. Which quadratic model best represents the data? f (x) = - 16x2 + 99x + 6 f (x) = - 36x2 + 37x + 5 f (x) = 36x2 + 37x + 5 f (x) = 16x2 + 99x + 6

Determine the ordered pair that satisfies the equation, 7x - 1y = 8.

Find the vertex, focus, and directrix of the parabola. 3x2 + 16y

Is the sum of two polynomials always a polynomial

Isaac buys milk to make milkshakes for all his friends. He buys quart of milk and one half gallon of milk. How many cups of milk did he buy?

Y = 1/2x-4 and y = - 2x-9 what is the solution of equations

a school cafeteria is considering new menu options. the manager puts a comment box jn the cafeteria where students can anonymously submit their choices. is this a representative sample? explain why or why not