Ken is financing a $355,000 mortgage for 30 years at a fixed rate of 7.55%. what is the total cost of the principal and interest after 30 years?

$594,178.20

$897,976.80

$763,605.00

$390,668.70

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?

How do you use the elimination method for this question? explain, because i really want to understand!

If a company produces x units of an item at a cost of $35 apiece the function c=35x is a of the total production costs