∠a=8x−10 ∘ start color #11accd, angle, a, equals, 8, x, minus, 10, degrees, end color #11accd \qquad \green{\angle b=3x + 90^\circ} ∠b=3x+90 ∘

Naomi’s parents want to have 50,000, saved for her college education, if they invest 20000 today and earn 7% interest compound annually, about how long will it take them to save 50 thousand

Inez has a phone card. the graph shows the number of minutes that remain on her phone card a certain number of days.

It took alice 5 5/6 hours to drive to her grandparents' house for . on the way home, she ran into traffic and it took her 7 3/8 hours. how much longer did the return trip take? write your answer as a proper fraction or mixed number in simplest form. the trip home took __hours longer. ?