Simplify the expression 2x+2x(x−3x)+7

Alaptop computer is purchased for $1350 . after each year, the resale value decreases by 30% . what will the resale value be after 5 years?

Evaluate the integral. (sec2(t) i t(t2 1)8 j t7 ln(t) k) dt

Driving 75 mph, it takes alicia 2 hours to reach the airport to go on a vacation. it then takes her 4 hours to get to her destination with the jet traveling at a speed of 400 mph. how many miles does alicia travel to get to her destination?