Mrs. barlow's math class took a test yesterday. out of 90 students, 70% of them passed. how many of mrs. barlow's students passed the test?

Four congruent circular holes with a diameter of 2 in. were punches out of a piece of paper. what is the area of the paper that is left ? use 3.14 for pi

Identify the initial amount a and the growth factor b in the exponential function. a(x)=680*4.3^x

Find the distance between (7,-6) and (-3,-9)