Answer:
![\text{Total cost=30x+35}](https://img.qammunity.org/2023/formulas/mathematics/college/kwniyu6kihj35dlj5g8w7py27792juoavf.png)
Step by step explanation:
The total cost of a purchase is represented by:
![\text{ cost of the unit}\cdot\text{ number purchased=total cost}](https://img.qammunity.org/2023/formulas/mathematics/college/knvq9u6lvm279gtm3l5p4utcblwhnqvo8b.png)
Then, since Mr. Mishra bought:
x number of soccer balls and each soccer ball is $30.
5 baseballs and each baseball is $7
Then, the algebraic expression of the purchase is given by:
![\begin{gathered} \text{Total cost=30x+7}\cdot5 \\ \text{Total cost=30x+35} \end{gathered}](https://img.qammunity.org/2023/formulas/mathematics/college/nhkm8wcp4gk7320iz5bwzch2jejrus4kqp.png)