Victoria earns money by babysitting. Last year she charged $14.00 per hour to babysit. this year, she increases her fee by 5% per hour. How much does Victoria charge to babysit 3.5 hours this year? *

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Ответ:

babylibra

25.02.2020

Mathematics

C. ±4/5

Step-by-step explanation:

25x² = 16

25x² - 16 = 16 - 16

25x² - 16 = 0

25x² + 20x - 20x - 16 = 0

(25x² + 20x) + (- 20x - 16) = 0

5x(5x + 4) - 4(5x + 4) = 0

(5x - 4)(5x + 4) = 0

5x - 4 =0

5x + 4 = 0

$x=-\frac{4}{5}$

$x=\frac{4}{5}$

± is a symbol which represents addition and subtraction.

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