4) Gavin bakes 70 cookies in an hour. How many cookies can he bake in 4 hours? \( \begin{array}{llll}\text { 4) } 210 & \text { (1)) } 240 & \text { (1)) } 350 & 350\end{array} \)

To find out how many cookies Gavin can bake in 4 hours, we can follow these steps: 1. **Identify the rate of baking**: Gavin bakes 70 cookies in 1 hour. 2. **Calculate the total for 4 hours**: To find out how many cookies he can bake in 4 hours, we multiply the number of cookies he bakes in 1 hour by the number of hours. \[ \text{Total cookies} = \text{Cookies per hour} \times \text{Number of hours} \] Substituting the known values: \[ \text{Total cookies} = 70 \times 4 \] 3. **Perform the multiplication**: \[ 70 \times 4 = 280 \] Thus, Gavin can bake a total of 280 cookies in 4 hours. However, it seems that the options provided do not include 280. Let's double-check the calculations: - Gavin bakes 70 cookies in 1 hour. - In 4 hours, he would bake: \[ 70 \times 4 = 280 \] Since 280 is not among the options (210, 240, 350), it appears there may be an error in the options provided. The correct answer is 280 cookies.