Last week, Jamal and Elena each donated money to charity. Jamal donated $51.88 to help endangered animals, and Elena donated $72.01 to save the rain forest. How much did Jamal and Elena donate in all?

A. 90 degrees b. 45 degrees c. 30 degrees d. 120 degrees

Afarmer has a large field that is x feet in length. he wants to fence in a rectangular section in the middle of the field , leaving a length of 100 feet of open field behind each end of the fenced rectangle.he also wants the width of the fenced-in space to be 100 feet less than its length. find the expressions to represent the length and width of the fenced section of the field

Aculture started with 2,000 bacteria. after 8 hours, it grew to 2,400 bacteria. predict how many bacteria will be present after 19 hours . round your answer to the nearest whole number. p=ae^kt