Answer all questions for brainliest There are 100 bolts in 5 bookcases.

What is the unit rate in bolts per bookcase?

2 bolts per bookcase

20 bolts per bookcase

50 bolts per bookcase

200 bolts per bookcase

2.
A juice shop needed 360 oranges to make 40 L of fresh-squeezed juice.

How many oranges would be needed to make 60 L of fresh-squeezed juice?

380 oranges

400 oranges

460 oranges

540 oranges

3.
A doctor sees 210 patients every 3 weeks.

At this rate, how many patients will the doctor see in 12 weeks?

70 patients

280 patients

840 patients

2520 patients

Which of the following represents the factorization of the trinomial below? x^2+7x-30

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?

What is the area of the shaded sector?