If x varies directly as y, and x=12 when y=3, find x when y=7

Eduardo earns a base salary of $30,000 per year and earns $1,875 per car he sells. Which equation can be used to find the number of cars, c, that Eduardo sold in a year he made 46,875?

Samuel's Car Service will charge a flat travel fee of $4.75 for anyone making a trip. They charge an additional set rate of $1.50 per mile that is traveled. What is an equation that represents the charges? 1) y=1.5x+1.5 2) y=4.75x+4.75 3) y=1.5x+4.

Which expression is equivalent to 12a+8

The function y=7500 (1.08) t represents the value y of an investment after t years. What is the value of the investment after 6 years?

What is - 1/2t=1/3t-14

Bowl contains 8 red balls, and 7 blue balls, and you draw 4 balls. In how many ways can the selection be made so that at least one of each color is draw?

X^2+1/2x+1/16=4/9 Factor the perfect-square trinomial on the left side of the equation. (x + ) ² = 4/9

Which number has the least absolute value? A) 30 B) 10 C) - 20 D) - 40

43 is a 2 digit odd number that is composite

Lisa has 1/3 of an hour to read and watch television. She wants to split her time equally between the two activities