Sadie is drawing a scale drawing of her room, which is 9 ft. by 10 ft. Which scale could she use if she wants to fit her drawing on a piece of paper measuring 8.5 in. by 11 in.?

A) 1 inch = 1 foot
B) 1.5 inch = 1 foot
C) 0.75 = 1 foot
D) 2 inches = 1 foot

Erinn wrote the equation –5x + 4y = 32 to represent her hourly wage (y) and how this wage has changed during each year that she worked at a company (x). what is the rate of change in erinn's hourly wage per year?

Can someone me with my math problem pls my teacher is on my back about this

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?