1. Many animal populations living in a particular area would most likely a. Occupy the same niche. b. Have similar physical requirements. C. Eat the same food d. Require an input of solar energy 2. Maintaining stability in an ecosystem most likely depends on

Activity 1. Find the missing number of the equivalent fraction \( \begin{array}{lllll}\text { a) } \frac{2}{3}=\frac{6}{4} & \text { b) } \frac{8}{12}=\frac{7}{3} & \text { c) } \frac{9}{12}=\frac{3}{4} & \text { d) } \frac{5}{3}=\frac{7}{6}\end{array} \)

6.) \( \begin{aligned} P(-7,-5) \\ \text { slope }=\frac{3}{4}\end{aligned} \)

Expand the following expressions first. Then simplify using exponents. (a) \( b^{3} \cdot b^{4} \) (b) \( 3^{3} \cdot 3^{4} \) Part: \( 0 / 4 \) Part 1 of 4 \( b^{3} \cdot b^{4} \) is expanded as \( \square . ~ \)

\[ \frac{\text { original }- \text { New }}{\text { Oringinal }} \times 100 \] The cost of a soft drink from the vending machine was \( \$ 0.90 \) last year, but it is \( \$ 1 \) this year.

An ice cube that is 4 cm on each side is melting at a rate of \( 3 \mathrm{~cm}^{3} \) per minute. How fast is the length of the side decreasing? At the moment when the ice cube is 4 cm on each side, the side length is decreasing at a rate of approximately \( \square \mathrm{cm} \) per minute. (Type an integer or decimal rounded to three decimal places as needed.)