On a math quiz, you earn 10 points for each question answered correctly. in the equation below, x represents the number of questions that you answer correctly on this quiz, and y represents the total number of points you score on this quiz. the relationship between these two variables is modeled by the equation y = 10x.

what is the independent variable?
a) the value of 10 in the equation.
b) the total number of points scored on the exam.
c) the number of questions answered correctly on the exam.
d) the independent variable cannot be determined from the given information.

Jayne is studying urban planning and finds that her town is decreasing in population by 3% each year. the population of her town is changing by a constant rate.true or false?

Aspacecraft can attain a stable orbit 300 kilometers above earth if it reaches a velocity of 7.7 kilometers per second. the formula for a rocket's maximum velocity v in kilometers per second is vequalsminus0.0098tplusc ln upper r, where t is the firing time in seconds, c is the velocity of the exhaust in kilometers per second, and r is the ratio of the mass of the rocket filled with fuel to the mass of the rocket without fuel. find the velocity of a spacecraft whose booster rocket has a mass ratio of 20, an exhaust velocity of 2.1 km/s, and a firing time of 15 s. can the spacecraft achieve a stable orbit 300 km above earth?

Tim has obtained a 3/27 balloon mortgage. after the initial period, he decided to refinance the balloon payment with a new 30-year mortgage. how many years will he be paying for his mortgage in total?