OPTION C is the correct answer.
The equivalent expression of 1/2 + 3c + 4/5 is 
<h3 /><h3>How to determine the equivalent expression?</h3>
The expression is given as:
1/2 + 3c + 4/5
Take the LCM of the expression

Evaluate the like terms

Hence, the equivalent expression of 1/2 + 3c + 4/5 is 
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Answer: the bridge is 11.025 m high
Step-by-step explanation:
Given that;
Time taken to hit the water t = 1.5 sec
height of bridge = ?
lets take a look at the equation of motion;
y(t) = y₀ + (1/2)at²
with initial velocity zero and we know that acceleration due to gravidity is 9.8m/s
we substitute
y(t) = (1/2)gt² = (1/2) × 9.8 × (1.5)²
y(t) = (1/2)gt² = (1/2) × 9.8 × (1.5)²
y(1.5) = 11.025 m
Therefore, the bridge is 11.025 m high
A simplified equation would be 2-5n.