ANSWER RIGHT NOW PLEASE - A rectangular chocolate bar consists of a grid of congruent chocolate squares. The bar can be broken into 2 pieces by snapping it across a grid line. Neil breaks off a strip of chocolate that is 2 squares wide and eats the chocolate he obtains. Later from the same bar, Jack breaks off a strip off a strip of chocolate that is one square wide and eats the 9 chocolates he obtains. How many squares are left in the chocolate bar?? A) 72
B) 63
C) 54
D) 45
E) 36

Astudent is determining the influence of different types of food on the growth rate of spiders. she feeds one group of spiders two caterpillars twice a week. the other group received similarly-sized beetles twice a week. she records the amount of time required for individuals to reach sexual maturity. her hypothesis is that the spiders feeding on caterpillars will have a faster growth rate because caterpillars have a higher protein content compared to beetles. in this experiment, what is the dependent variable? spiders assigned to different feeding groups. time required to reach sexual maturity number of prey items fed twice a week. growth rates of each group.

What is the angle measure, or angle of depression, between this bird and the bird watcher?

Which pair of expressions is equivalent? a 7(1–k)and7–k b 7(1–k)and1–7k c 7(1–k)and7–k d 7(1–k)and7–7k