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ss7ja [257]
3 years ago
9

Casandra is training for a 10 mile race. On the first day of running training she runs 4 miles, each day after that she adds on

0.5 mile. On what day will Casandra run 8 miles?
Mathematics
1 answer:
ArbitrLikvidat [17]3 years ago
7 0
Let the number of days needed be x.

First day = 4 miles = 3.5 + 0.5
Second day = 3.5 + 0.5(2)
Third day = 3.5 + 0.5(3)

Equation: 3.5 + 0.5x 

<u>Find the number of days needed to run 8 miles:</u>
3.5 + 0.5x = 8
0.5x = 4.5
x = 9
 
Answer: Casandra 8 miles on the <u>9th day</u>.
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