Sandra rode her bike 5 times as many miles as Barbara. If b, the distance Barbara rode, equals 3.4 miles, what is the correct expression and distance Sandra rode? b + 5; when b = 3.4 the distance Sandra rode is 17 miles. 5b; when b = 3.4 the distance Sandra rode is 17 miles. 5b; when b = 3.4 the distance Sandra rode is 8.4 miles. b + 5; when b = 3.4 the distance Sandra rode is 8.4 miles.

Nick estimated that 5/8+4/7 is about 2.explain how you know his estimate is not reasonable plz and fast i will give 50 points

Any is very appreciated! (picture is provided below)not sure how to do this at all won't lie

Dexter read 11 science fiction books and 5 history books. lena read 9 science fiction books and 4 history books. compare the students’ ratios of science fiction books to history books. 1. determine the ratios’ form:    science fiction books to history books 2. write the ratios as fractions:    dexter: 115; lena: 94 3. rewrite with a common denominator. 4. compare. 5. answer the question. determine which shows the correct comparison of the ratios for this problem.