Jocelyn is painting a wall that require \( 4 \frac{2}{7} \) gallons of paint. The paint comes from a bucket of paint with a volume of \( 22 \frac{7}{8} \) gallons. Which expression can be used to determine how much paint remains after the wall is painted? \[ \begin{array}{l}\left(22 \frac{7}{8}\right)-\left(4 \frac{2}{7}\right) \div\left(22 \frac{7}{8}\right) \\ \left(22 \frac{7}{8}\right) \div\left(4 \frac{2}{7}\right) \\ \left(22 \frac{7}{8}\right) \times\left(4 \frac{2}{7}\right)\end{array} \]

A toy store sells toy cars in three different sizes: small, medium, and large. Three medium toy cars weigh the same as five small toy cars. Four large toy cars weigh the same as six medium toy cars. Eight large toy cars weigh What is the missing number in the sentence above? A \( \frac{1}{2} \) B \( \frac{1}{4} \) C 2 D 20 E 40

Use \( <,> \), or \( = \) to compare the \( \begin{array}{cc}\begin{array}{ll}\text { (a) } 0.37 & \square 0.39 \\ \text { (b) } 6.4 & \square 6.40 \\ \text { (c) } 0.04 & \square 0.1\end{array} & \square<\square \\ \square>\square & \square=\square \\ \times & 5\end{array} \)

\( \begin{array}{ll}\text { Sejam } & a=12^{4} \\ \text { e } & b=30^{8} \\ \text { Calcule o } & c=42^{9} \\ & m d c(a, b, c)\end{array} \)

A car travels 450 kilometers in 5 hours. What is its average speed in kilometers per hour?

Uma auxiliar de enfermagem pretende usar a menor quantidade possivel de gavetas para acomodar 80 frascos de um tipo de medicamento, 150 frascos de outro tipo, e 120 frascos de um terceiro tipo. Se ela colocar a mesma quantidade de frascos em todas as gavetas, e medicamentos de um único tipo em cada uma delas, quantos frascos, no máximo, ela pode colocar em cada gaveta?