1. The current (I) that flows in an electrical appliance varies inversely as the resistance (R of the appliance. If the current is 3 amperes when the resistance is 80 ohms, find (a) The constant of proportionality 5 Marks] (b) The current when the resistance is 100 ohms [5 Marks]

I think of a number, multiply it by three, and add four. I get a) Using the statement above, form an equation. Use the letter ' \( x \) ' for the unknown number.

7) reflection across the \( y \)-axis \( d(-5,2) \) \( \begin{array}{ll}\text { A) } C(2,5) & \text { B) } C(5,2) \\ \text { C) } C(2,-4) & \text { D) } C(-2,3)\end{array} \)

A cylinder has a base diameter of 8 centimeters and a height of 7 centimeters. What is its volume in cubic centimeters, to the nearest tenths place?

Calculacuanto Mide elcoet

26. Determine pelo menos três soluções distin- tas para cada uma das seguintes equações: \( \begin{array}{ll}\text { a) } 5 x-3 y=5 & \text { c) } 2 x+y=20 \\ \text { b) } \frac{x}{2}+\frac{y}{4}=\frac{7}{8} & \text { d) } 2 x-4 y=12\end{array} \)