Andrea rents a bike for a day. the rental charges can be determined by the equation: r = $0.5d, where r is rental charges and d is number of days she rents the bike. calculate the unit rate.

Last year, a state university received 3,560 applications from boys. of those applications, 35 percent were from boys who lived in other states. part a)how many applications did the university receive from boys who lived in other states? part b)applications to the university from boys represented 40percent of all applications. how many applications did the university receive in all? i don't how to do part b so me and plz tell how you got your answer

Determine the difference: 3.2 × 1010 – 1.1 × 1010. write your answer in scientific notation.

Solve the equation for x.3(6x - 1) = 12 i've tried doing the math and i can't find out what i'm doing wrong