Question

Evaluate the expression for the given value of the variable: 5 × (h + 3) for h = 7 2 × (c² - 5) for c= 47a - 4a for a = 8

Answer 1

Answer:

50

22

24

Explanation:

Given the below expression;

$5\times(h+3)$

Let's go ahead evaluate when h = 7;

$5\times(7+3)=5\times10=50$

Given the below expression;

$2\times(c^2-5)$

Let's go ahead evaluate when c = 4;

$\begin{gathered} 2\times(4^2-5) \\ =2\times(16-5) \\ =2\times11 \\ =22 \end{gathered}$

Given the below expression;

$7a-4a$

Let's go ahead evaluate when a = 8;

$7(8)-4(8)=56-32=24$