Dean purchased a new cell phone through Verizon. The phone cost him $210 but that was 40% off. How much did the phone cost originally?

In the given figure ar(adf) =ar(cda) and ar(cdf) = ar(cdf). show that abdc and cdfe are trapeziums.

Shane can shovel the driveway in 4 hours, but if his sister it would take 2 hours. how long would it take taylor to shovel the driveway alone

Explain how you can find the missing fraction in 3 4/5 / (blank) 2 5/7. then find the missing fraction.