The equation y = 35.25x + 40 gives the labor cost y of repairing a car if takes x hours to repair the car.

according to the model, what is the best estimate of the labor cost if it takes 6 hours to repair a car?

$251.50
$211.50
$81.25
$41.25

Achemist has 200 ml of a 10% sucrose solution. she adds x ml of a 40% sucrose solution. the percent concentration, y, of the final mixture is given by the rational function: the chemist needs the concentration of the final mixture to be 30%. how many milliliters of the 40% solution should she add to the 10% solution to get this concentration?

What is the expression in factored form? -20x^2 - 12x a. 4x(5x+3) b. -4x(5x-3) c. -4(5x+3) d. -4x(5x+3)

Complete the solution of the equation. find the value of y when x equals to 1 9x-5y=29