gijohnsishere gijohnsishere

11-01-2019
Mathematics

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If the average daily rainfall for the last seven days is (3X +0.5) cm write an algebraic expression for the total rainfall for the whole week

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jimrgrant1 jimrgrant1

11-01-2019

Answer:

21x + 3.5

Step-by-step explanation:

the average is calculated as

average = [tex]\frac{total}{count}[/tex] = 3x + 0.5 ← multiply both sides by 7

total = 7 × (3x + 0.5) = 21x + 3.5

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