Answer
$7^4+5^3=2,526$
Work Step by Step
To evaluate $7^{4}+5^{3}$ using a calculator, press the following keys in the specified order:
Press $\boxed{7}, \quad \boxed{y^x} \text{ or } \boxed{\text{^}}, \quad \boxed{4}, \quad \boxed{+}, \quad \boxed{5}, \quad \boxed{y^x} \text{ or } \boxed{\text{^}}, \quad \boxed{3}, \quad \boxed{=} \text{ or } \boxed{\text{ENTER}}$ to obtain:
$$7^4+5^3=2,526$$
