The length of a rectangle is 3 meters more than the width. the perimeter of the rectangle is 26 meters. if the width is b, which equation represents the situation? how many solutions will this equation have?
a. (b+3)(b) = 26, which has one solution
b. 2(b+3) + 2b = 26 which has infinitely many solutions
c. 2[(b+3) + b] = 26 which has one solution
d. 2[b+3) + b] = 26 which has no solution

If f(x)= 3x+6 which of the following is the inverse of f(x)

Ican interpret and represent the remainder in division calculations sensibly for the context (eg if we wont to know how many 40 seat buses will be needed to transport 170 students for on excursion, we divide 170 by 40 and realise buses and another smaller vehicle to that we need 4 transport 10 more students) solve the following questions. show your work! 11) the zoo had 420 butterflies that needed to be transported to a new enclosure. the boxes that the butterflies would be moved in only hold 80 butterflies in each. how many boxes would they need? 2 12) each classroom in the school can have exactly 25 students, if there are 345 students in the school how many full classrooms are there?

Which situation is an example of an observational study?