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Sagot :

Answer:

Ben: e = 25t + 75

Kara: e = 25t

Step-by-step explanation:

For Kara, the earnings go up $25 every hour, so equation is e = 25t. To show it works, substitute in each hour

0hr = 25 × 0 = 0

1hr = 25 × 1 = 25

2hrs = 25 × 2 = 50

3hrs = 25 × 3 = 75

For Ben, the earnings also go up $25 every hour, however receives a bonus which we will call x

so far we have equation e = 25t + x

substitute in any hour with earning, I'll use 1hr with $100

$100 = 25(1) + x

$100 = 25 + x

subtract 25 on both sides

$100 - 25 = 75

so x is 75

final equation: e = 25t + 75