Nisha receives $10 each week for school expenses and uses $7.50 of the money to buy lunch. What percent of the $10 does she spend on lunches each week? a. 55% b. 65% c. 75% d. 85%

What is the value with a place of tenths in 907.456 1) 0 2) 6 3) 4 4) 5

Can someone me i’m confused. will give brainliest and a whole bunch of points

The position of a moving particle is given by the position function: f(t)=-9t-t^2-0.2t^3+0.1t^4 0 a. at what time does the particle reverse direction? b. when is the displacement positive? (round one decimal place and answer in interval notation) c. when is the displacement negative? (round one decimal place and answer in interval notation) d. when is the particle’s acceleration positive? (round one decimal place and answer in interval notation) e. when is the particle’s acceleration negative? (round one decimal place and answer in interval notation)