I'm really confused:

Solve for x if

A train travels 300 miles in the same time that a truck travels 180 miles. The rate of the truck is 20 miles per hour slower than the rate of the train. What is the rate of the train?

What is the largest four-digit negative integer congruent to $1 / pmod{23}?$

40 students is 0.80%ofstudents

Solve 3log3 (2x + 1) = 6

Mr. Lewis sees a red light ahead and applies the brakes on his car. The car travels 300.5 feet before coming to a stop. For each foot, the car travels during this time, its speed changes by - 0.2 miles per hour.

Amy got a $1,000 loan from her bank, and she had to repay $1,550. What are the principal and interest amounts in this transaction?

What is 8/9 as a decimal rounded to nearest thousandth

What is the mean cost of replacing brake pads for four different vehicles ai at the following prices $120,$235,$98,$142

If f (x) = 1/2 [x], what is f (7.6) •3 •3.5 •3.8 •4

8 people are about to board a plane. In how many ways can this be done?